[Federal Register Volume 65, Number 120 (Wednesday, June 21, 2000)]
[Corrections]
[Pages 38629-38634]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: C0-9534]



  Federal Register / Vol. 65, No. 120 / Wednesday, June 21, 2000 / 
Corrections  

[[Page 38629]]



ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 141

[FRL-6580-2]
RIN 2040-AD06


National Primary Drinking Water Regulations: Public Notification 
Rule

Correction

    In rule document 00-9534 beginning on page 25982 in the issue of 
Thursday, May 4, 2000, make the following correction:


Sec. 141.204  [Corrected]

    1. On page 26037, in the third column, in Sec. 141.204(b), the 
paragraph designated as ``(2)(2)'' should be designated as ``(2)''.

Appendix B to Subpart Q [Corrected]

    2. On pages 26043 through 20647, appendix B to subpart Q of part 
141 is corrected to read as follows:

         Appendix B to Subpart Q of Part 141.--Standard Health Effects Language for Public Notification
----------------------------------------------------------------------------------------------------------------
                                                                          Standard health effects language for
          Contaminant              MCLG \1\ mg/L       MCL \2\ mg/L               public notification
----------------------------------------------------------------------------------------------------------------
                               National Primary Drinking Water Regulations (NPDWR)
                                         A. Microbiological Contaminants
----------------------------------------------------------------------------------------------------------------
1a. Total coliform............  Zero                See footnote \3\   Coliforms are bacteria that are naturally
                                                                        present in the environment and are used
                                                                        as an indicator that other, potentially-
                                                                        harmful, bacteria may be present.
                                                                        Coliforms were found in more samples
                                                                        than allowed and this was a warning of
                                                                        potential problems.
1b. Fecal coliform/E. coli....  Zero                Zero               Fecal coliforms and E. coli are bacteria
                                                                        whose presence indicates that the water
                                                                        may be contaminated with human or animal
                                                                        wastes. Microbes in these wastes can
                                                                        cause short-term effects, such as
                                                                        diarrhea, cramps, nausea, headaches, or
                                                                        other symptoms. They may pose a special
                                                                        health risk for infants, young children,
                                                                        some of the elderly, and people with
                                                                        severely compromised immune systems.
2a. Turbidity (MCL) \4\.......  None                1 NTU \5\/5 NTU    Turbidity has no health effects. However,
                                                                        turbidity can interfere with
                                                                        disinfection and provide a medium for
                                                                        microbial growth. Turbidity may indicate
                                                                        the presence of disease-causing
                                                                        organisms. These organisms include
                                                                        bacteria, viruses, and parasites that
                                                                        can cause symptoms such as nausea,
                                                                        cramps, diarrhea and associated
                                                                        headaches.
2b. Turbidity (SWTR TT) \6\...  None                TT \7\             Turbidity has no health effects. However,
                                                                        turbidity can interfere with
                                                                        disinfection and provide a medium for
                                                                        microbial growth. Turbidity may indicate
                                                                        the presence of disease-causing
                                                                        organisms. These organisms include
                                                                        bacteria, viruses, and parasites that
                                                                        can cause symptoms such as nausea,
                                                                        cramps, diarrhea and associated
                                                                        headaches.
2c. Turbidity (IESWTR TT) \8\.  None                TT                 Turbidity has no health effects. However,
                                                                        turbidity can interfere with
                                                                        disinfection and provide a medium for
                                                                        microbial growth. Turbidity may indicate
                                                                        the presence of disease-causing
                                                                        organisms. These organisms include
                                                                        bacteria, viruses, and parasites that
                                                                        can cause symptoms such as nausea,
                                                                        cramps, diarrhea and associated
                                                                        headaches.
----------------------------------------------------------------------------------------------------------------
  B. Surface Water Treatment Rule (SWTR) and Interim Enhanced Surface Water Treatment Rule (IESWTR) violations
----------------------------------------------------------------------------------------------------------------
3. Giardia lamblia (SWTR/       Zero                TT \10\            Inadequately treated water may contain
 IESWTR).                                                               disease-causing organisms. These
                                                                        organisms include bacteria, viruses, and
                                                                        parasites which can cause symptoms such
                                                                        as nausea, cramps, diarrhea, and
                                                                        associated headaches.
4. Viruses (SWTR/IESWTR)......

[[Page 38630]]

 
5. Heterotrophic plate count
 (HPC) bacteria \9\ (SWTR/
 IESWTR).
6. Legionella (SWTR/IESWTR)...
7. Cryptosporidium (IESWTR)...
8. Antimony...................  0.006               0.006              Some people who drink water containing
                                                                        antimony well in excess of the MCL over
                                                                        many years could experience increases in
                                                                        blood cholesterol and decreases in blood
                                                                        sugar.
9. Arsenic....................  None                0.05               Some people who drink water containing
                                                                        arsenic in excess of the MCL over many
                                                                        years could experience skin damage or
                                                                        problems with their circulatory system,
                                                                        and may have an increased risk of
                                                                        getting cancer.
10. Asbestos (10 m)..  7 MFL \11\          7 MFL              Some people who drink water containing
                                                                        asbestos in excess of the MCL over many
                                                                        years may have an increased risk of
                                                                        developing benign intestinal polyps.
11. Barium....................  2                   2                  Some people who drink water containing
                                                                        barium in excess of the MCL over many
                                                                        years could experience an increase in
                                                                        their blood pressure.
12. Beryllium.................  0.004               0.004              Some people who drink water containing
                                                                        beryllium well in excess of the MCL over
                                                                        many years could develop intestinal
                                                                        lesions.
13. Cadmium...................  0.005               0.005              Some people who drink water containing
                                                                        cadmium in excess of the MCL over many
                                                                        years could experience kidney damage.
14. Chromium (total)..........  0.1                 0.1                Some people who use water containing
                                                                        chromium well in excess of the MCL over
                                                                        many years could experience allergic
                                                                        dermatitis.
15. Cyanide...................  0.2                 0.2                Some people who drink water containing
                                                                        cyanide well in excess of the MCL over
                                                                        many years could experience nerve damage
                                                                        or problems with their thyroid.
16. Fluoride..................  4.0                 4.0                Some people who drink water containing
                                                                        fluoride in excess of the MCL over many
                                                                        years could get bone disease, including
                                                                        pain and tenderness of the bones.
                                                                        Fluoride in drinking water at half the
                                                                        MCL or more may cause mottling of
                                                                        children's teeth, usually in children
                                                                        less than nine years old. Mottling, also
                                                                        known as dental fluorosis, may include
                                                                        brown staining and/or pitting of the
                                                                        teeth, and occurs only in developing
                                                                        teeth before they erupt from the gums.
17. Mercury (inorganic).......  0.002               0.002              Some people who drink water containing
                                                                        inorganic mercury well in excess of the
                                                                        MCL over many years could experience
                                                                        kidney damage.
18. Nitrate...................  10                  10                 Infants below the age of six months who
                                                                        drink water containing nitrate in excess
                                                                        of the MCL could become seriously ill
                                                                        and, if untreated, may die. Symptoms
                                                                        include shortness of breath and blue
                                                                        baby syndrome.
19. Nitrite...................  1                   1                  Infants below the age of six months who
                                                                        drink water containing nitrite in excess
                                                                        of the MCL could become seriously ill
                                                                        and, if untreated, may die. Symptoms
                                                                        include shortness of breath and blue
                                                                        baby syndrome.
20. Total Nitrate and Nitrite.  10                  10                 Infants below the age of six months who
                                                                        drink water containing nitrate and
                                                                        nitrite in excess of the MCL could
                                                                        become seriously ill and, if untreated,
                                                                        may die. Symptoms include shortness of
                                                                        breath and blue baby syndrome.
21. Selenium..................  0.05                0.05               Selenium is an essential nutrient.
                                                                        However, some people who drink water
                                                                        containing selenium in excess of the MCL
                                                                        over many years could experience hair or
                                                                        fingernail losses, numbness in fingers
                                                                        or toes, or problems with their
                                                                        circulation.
22. Thallium..................  0.0005              0.002              Some people who drink water containing
                                                                        thallium in excess of the MCL over many
                                                                        years could experience hair loss,
                                                                        changes in their blood, or problems with
                                                                        their kidneys, intestines, or liver.
----------------------------------------------------------------------------------------------------------------
                                             C. Lead and Copper Rule
----------------------------------------------------------------------------------------------------------------
23. Lead......................  Zero                TT \12\            Infants and children who drink water
                                                                        containing lead in excess of the action
                                                                        level could experience delays in their
                                                                        physical or mental development. Children
                                                                        could show slight deficits in attention
                                                                        span and learning abilities. Adults who
                                                                        drink this water over many years could
                                                                        develop kidney problems or high blood
                                                                        pressure.
24. Copper....................  1.3                 TT \13\            Copper is an essential nutrient, but some
                                                                        people who drink water containing copper
                                                                        in excess of the action level over a
                                                                        relatively short amount of time could
                                                                        experience gastrointestinal distress.
                                                                        Some people who drink water containing
                                                                        copper in excess of the action level
                                                                        over many years could suffer liver or
                                                                        kidney damage. People with Wilson's
                                                                        Disease should consult their personal
                                                                        doctor.
----------------------------------------------------------------------------------------------------------------
                                      D. Synthetic Organic Chemicals (SOCs)
----------------------------------------------------------------------------------------------------------------
25. 2,4-D.....................  0.07                0.07               Some people who drink water containing
                                                                        the weed killer 2,4-D well in excess of
                                                                        the MCL over many years could experience
                                                                        problems with their kidneys, liver, or
                                                                        adrenal glands.

[[Page 38631]]

 
26. 2,4,5-TP (Silvex).........  0.05                0.05               Some people who drink water containing
                                                                        silvex in excess of the MCL over many
                                                                        years could experience liver problems.
27. Alachlor..................  Zero                0.002              Some people who drink water containing
                                                                        alachlor in excess of the MCL over many
                                                                        years could have problems with their
                                                                        eyes, liver, kidneys, or spleen, or
                                                                        experience anemia, and may have an
                                                                        increased risk of getting cancer.
28. Atrazine..................  0.003               0.003              Some people who drink water containing
                                                                        atrazine well in excess of the MCL over
                                                                        many years could experience problems
                                                                        with their cardiovascular system or
                                                                        reproductive difficulties.
29. Benzo(a)pyrene (PAHs).....  Zero                0.0002             Some people who drink water containing
                                                                        benzo(a)pyrene in excess of the MCL over
                                                                        many years may experience reproductive
                                                                        difficulties and may have an increased
                                                                        risk of getting cancer.
30. Carbofuran................  0.04                0.04               Some people who drink water containing
                                                                        carbofuran in excess of the MCL over
                                                                        many years could experience problems
                                                                        with their blood, or nervous or
                                                                        reproductive systems.
31. Chlordane.................  Zero                0.002              Some people who drink water containing
                                                                        chlordane in excess of the MCL over many
                                                                        years could experience problems with
                                                                        their liver or nervous system, and may
                                                                        have an increased risk of getting
                                                                        cancer.
32. Dalapon...................  0.2                 0.2                Some people who drink water containing
                                                                        dalapon well in excess of the MCL over
                                                                        many years could experience minor kidney
                                                                        changes.
33. Di (2-ethylhexyl) adipate.  0.4                 0.4                Some people who drink water containing di
                                                                        (2-ethylhexyl) adipate well in excess of
                                                                        the MCL over many years could experience
                                                                        general toxic effects or reproductive
                                                                        difficulties.
34. Di (2-ethylhexyl)           Zero                0.006              Some people who drink water containing di
 phthalate.                                                             (2-ethylhexyl) phthalate in excess of
                                                                        the MCL over many years may have
                                                                        problems with their liver, or experience
                                                                        reproductive difficulties, and may have
                                                                        an increased risk of getting cancer.
35. Dibromochloropropane        Zero                0.0002             Some people who drink water containing
 (DBCP).                                                                DBCP in excess of the MCL over many
                                                                        years could experience reproductive
                                                                        difficulties and may have an increased
                                                                        risk of getting cancer.
36. Dinoseb...................  0.007               0.007              Some people who drink water containing
                                                                        dinoseb well in excess of the MCL over
                                                                        many years could experience reproductive
                                                                        difficulties.
37. Dioxin (2,3,7,8-TCDD).....  Zero                3 x 10 -8          Some people who drink water containing
                                                                        dioxin in excess of the MCL over many
                                                                        years could experience reproductive
                                                                        difficulties and may have an increased
                                                                        risk of getting cancer.
38. Diquat....................  0.02                0.02               Some people who drink water containing
                                                                        diquat in excess of the MCL over many
                                                                        years could get cataracts.
39. Endothall.................  0.1                 0.1                Some people who drink water containing
                                                                        endothall in excess of the MCL over many
                                                                        years could experience problems with
                                                                        their stomach or intestines.
40. Endrin....................  0.002               0.002              Some people who drink water containing
                                                                        endrin in excess of the MCL over many
                                                                        years could experience liver problems.
41. Ethylene dibromide........  Zero                0.00005            Some people who drink water containing
                                                                        ethylene dibromide in excess of the MCL
                                                                        over many years could experience
                                                                        problems with their liver, stomach,
                                                                        reproductive system, or kidneys, and may
                                                                        have an increased risk of getting
                                                                        cancer.
42. Glyphosate................  0.7                 0.7                Some people who drink water containing
                                                                        glyphosate in excess of the MCL over
                                                                        many years could experience problems
                                                                        with their kidneys or reproductive
                                                                        difficulties.
43. Heptachlor................  Zero                0.0004             Some people who drink water containing
                                                                        heptachlor in excess of the MCL over
                                                                        many years could experience liver damage
                                                                        and may have an increased risk of
                                                                        getting cancer.
44. Heptachlor epoxide........  Zero                0.0002             Some people who drink water containing
                                                                        heptachlor epoxide in excess of the MCL
                                                                        over many years could experience liver
                                                                        damage, and may have an increased risk
                                                                        of getting cancer.
45. Hexachlorobenzene.........  Zero                0.001              Some people who drink water containing
                                                                        hexachlorobenzene in excess of the MCL
                                                                        over many years could experience
                                                                        problems with their liver or kidneys, or
                                                                        adverse reproductive effects, and may
                                                                        have an increased risk of getting
                                                                        cancer.
46. Hexachlorocyclo-pentadiene  0.05                0.05               Some people who drink water containing
                                                                        hexachlorocyclopentadiene well in excess
                                                                        of the MCL over many years could
                                                                        experience problems with their kidneys
                                                                        or stomach.
47. Lindane...................  0.0002              0.0002             Some people who drink water containing
                                                                        lindane in excess of the MCL over many
                                                                        years could experience problems with
                                                                        their kidneys or liver.
48. Methoxychlor..............  0.04                0.04               Some people who drink water containing
                                                                        methoxychlor in excess of the MCL over
                                                                        many years could experience reproductive
                                                                        difficulties.
49. Oxamyl (Vydate)...........  0.2                 0.2                Some people who drink water containing
                                                                        oxamyl in excess of the MCL over many
                                                                        years could experience slight nervous
                                                                        system effects.

[[Page 38632]]

 
50. Pentachlorophenol.........  Zero                0.001              Some people who drink water containing
                                                                        pentachlorophenol in excess of the MCL
                                                                        over many years could experience
                                                                        problems with their liver or kidneys,
                                                                        and may have an increased risk of
                                                                        getting cancer.
51. Picloram..................  0.5                 0.5                Some people who drink water containing
                                                                        picloram in excess of the MCL over many
                                                                        years could experience problems with
                                                                        their liver.
52. Polychlorinated biphenyls   Zero                0.0005             Some people who drink water containing
 (PCBs).                                                                PCBs in excess of the MCL over many
                                                                        years could experience changes in their
                                                                        skin, problems with their thymus gland,
                                                                        immune deficiencies, or reproductive or
                                                                        nervous system difficulties, and may
                                                                        have an increased risk of getting
                                                                        cancer.
53. Simazine..................  0.004               0.004              Some people who drink water containing
                                                                        simazine in excess of the MCL over many
                                                                        years could experience problems with
                                                                        their blood.
54. Toxaphene.................  Zero                0.003              Some people who drink water containing
                                                                        toxaphene in excess of the MCL over many
                                                                        years could have problems with their
                                                                        kidneys, liver, or thyroid, and may have
                                                                        an increased risk of getting cancer.
----------------------------------------------------------------------------------------------------------------
                                      E. Volatile Organic Chemicals (VOCs)
----------------------------------------------------------------------------------------------------------------
55. Benzene...................  Zero                0.005              Some people who drink water containing
                                                                        benzene in excess of the MCL over many
                                                                        years could experience anemia or a
                                                                        decrease in blood platelets, and may
                                                                        have an increased risk of getting
                                                                        cancer.
56. Carbon tetrachloride......  Zero                0.005              Some people who drink water containing
                                                                        carbon tetrachloride in excess of the
                                                                        MCL over many years could experience
                                                                        problems with their liver and may have
                                                                        an increased risk of getting cancer.
57. Chlorobenzene (monochloro-  0.1                 0.1                Some people who drink water containing
 benzene).                                                              chlorobenzene in excess of the MCL over
                                                                        many years could experience problems
                                                                        with their liver or kidneys.
58. o-Dichlorobenzene.........  0.6                 0.6                Some people who drink water containing o-
                                                                        dichlorobenzene well in excess of the
                                                                        MCL over many years could experience
                                                                        problems with their liver, kidneys, or
                                                                        circulatory systems.
59. p-Dichlorobenzene.........  0.075               0.075              Some people who drink water containing p-
                                                                        dichlorobenzene in excess of the MCL
                                                                        over many years could experience anemia,
                                                                        damage to their liver, kidneys, or
                                                                        spleen, or changes in their blood.
60. 1,2-Dichloroethane........  Zero                0.005              Some people who drink water containing
                                                                        1,2-dichloroethane in excess of the MCL
                                                                        over many years may have an increased
                                                                        risk of getting cancer.
61. 1,1-Dichloroethylene......  0.007               0.007              Some people who drink water containing
                                                                        1,1-dichloroethylene in excess of the
                                                                        MCL over many years could experience
                                                                        problems with their liver.
62. cis-1,2-Dichloroethylene..  0.07                0.07               Some people who drink water containing
                                                                        cis-1,2-dichloroethylene in excess of
                                                                        the MCL over many years could experience
                                                                        problems with their liver.
63. trans-1,2-Dichloroethylene  0.1                 0.1                Some people who drink water containing
                                                                        trans-1,2-dichloroethylene well in
                                                                        excess of the MCL over many years could
                                                                        experience problems with their liver.
64. Dichloromethane...........  Zero                0.005              Some people who drink water containing
                                                                        dichloromethane in excess of the MCL
                                                                        over many years could have liver
                                                                        problems and may have an increased risk
                                                                        of getting cancer.
65. 1,2-Dichloropropane.......  Zero                0.005              Some people who drink water containing
                                                                        1,2-dichloropropane in excess of the MCL
                                                                        over many years may have an increased
                                                                        risk of getting cancer.
66. Ethylbenzene..............  0.7                 0.7                Some people who drink water containing
                                                                        ethylbenzene well in excess of the MCL
                                                                        over many years could experience
                                                                        problems with their liver or kidneys.
67. Styrene...................  0.1                 0.1                Some people who drink water containing
                                                                        styrene well in excess of the MCL over
                                                                        many years could have problems with
                                                                        their liver, kidneys, or circulatory
                                                                        system.
68. Tetrachloroethylene.......  Zero                0.005              Some people who drink water containing
                                                                        tetrachloroethylene in excess of the MCL
                                                                        over many years could have problems with
                                                                        their liver, and may have an increased
                                                                        risk of getting cancer.
69. Toluene...................  1                   1                  Some people who drink water containing
                                                                        toluene well in excess of the MCL over
                                                                        many years could have problems with
                                                                        their nervous system, kidneys, or liver.
70. 1,2,4-Trichlorobenzene....  0.07                0.07               Some people who drink water containing
                                                                        1,2,4-trichlorobenzene well in excess of
                                                                        the MCL over many years could experience
                                                                        changes in their adrenal glands.
71. 1,1,1-Trichloroethane.....  0.2                 0.2                Some people who drink water containing
                                                                        1,1,1-trichloroethane in excess of the
                                                                        MCL over many years could experience
                                                                        problems with their liver, nervous
                                                                        system, or circulatory system.

[[Page 38633]]

 
72. 1,1,2-Trichloroethane.....  0.003               0.005              Some people who drink water containing
                                                                        1,1,2-trichloroethane well in excess of
                                                                        the MCL over many years could have
                                                                        problems with their liver, kidneys, or
                                                                        immune systems.
73. Trichloroethylene.........  Zero                0.005              Some people who drink water containing
                                                                        trichloroethylene in excess of the MCL
                                                                        over many years could experience
                                                                        problems with their liver and may have
                                                                        an increased risk of getting cancer.
74. Vinyl chloride............  Zero                0.002              Some people who drink water containing
                                                                        vinyl chloride in excess of the MCL over
                                                                        many years may have an increased risk of
                                                                        getting cancer.
75. Xylenes (total)...........  10                  10                 Some people who drink water containing
                                                                        xylenes in excess of the MCL over many
                                                                        years could experience damage to their
                                                                        nervous system.
----------------------------------------------------------------------------------------------------------------
                                           F. Radioactive Contaminants
----------------------------------------------------------------------------------------------------------------
76. Beta/photon emitters......  Zero                4 mrem/yr \14\     Certain minerals are radioactive and may
                                                                        emit forms of radiation known as photons
                                                                        and beta radiation. Some people who
                                                                        drink water containing beta and photon
                                                                        emitters in excess of the MCL over many
                                                                        years may have an increased risk of
                                                                        getting cancer.
77. Alpha emitters............  Zero                15 pCi/L \15\      Certain minerals are radioactive and may
                                                                        emit a form of radiation known as alpha
                                                                        radiation. Some people who drink water
                                                                        containing alpha emitters in excess of
                                                                        the MCL over many years may have an
                                                                        increased risk of getting cancer.
78. Combined radium (226 &      Zero                5 pCi/L            Some people who drink water containing
 228).                                                                  radium 226 or 228 in excess of the MCL
                                                                        over many years may have an increased
                                                                        risk of getting cancer.
----------------------------------------------------------------------------------------------------------------
 G. Disinfection Byproducts (DBPs), Byproduct Precursors, and Disinfectant Residuals: Where disinfection is used
 in the treatment of drinking water, disinfectants combine with organic and inorganic matter present in water to
     form chemicals called disinfection byproducts (DBPs). EPA sets standards for controlling the levels of
   disinfectants and DBPs in drinking water, including trihalomethanes (THMs) and haloacetic acids (HAAs) \16\
----------------------------------------------------------------------------------------------------------------
79. Total trihalomethanes       N/A                 0.10/0.08017 18    Some people who drink water containing
 (TTHMs).                                                               trihalomethanes in excess of the MCL
                                                                        over many years may experience problems
                                                                        with their liver, kidneys, or central
                                                                        nervous system, and may have an
                                                                        increased risk of getting cancer.
80. Haloacetic Acids (HAA)....  N/A                 0.060 \19\         Some people who drink water containing
                                                                        haloacetic acids in excess of the MCL
                                                                        over many years may have an increased
                                                                        risk of getting cancer.
81. Bromate...................  Zero                0.010              Some people who drink water containing
                                                                        bromate in excess of the MCL over many
                                                                        years may have an increased risk of
                                                                        getting cancer.
82. Chlorite..................  0.08                1.0                Some infants and young children who drink
                                                                        water containing chlorite in excess of
                                                                        the MCL could experience nervous system
                                                                        effects. Similar effects may occur in
                                                                        fetuses of pregnant women who drink
                                                                        water containing chlorite in excess of
                                                                        the MCL. Some people may experience
                                                                        anemia.
83. Chlorine..................  4 (MRDLG) \20\      4.0 (MRDL) \21\    Some people who use water containing
                                                                        chlorine well in excess of the MRDL
                                                                        could experience irritating effects to
                                                                        their eyes and nose. Some people who
                                                                        drink water containing chlorine well in
                                                                        excess of the MRDL could experience
                                                                        stomach discomfort.
84. Chloramines...............  4 (MRDLG)           4.0 (MRDL)         Some people who use water containing
                                                                        chloramines well in excess of the MRDL
                                                                        could experience irritating effects to
                                                                        their eyes and nose. Some people who
                                                                        drink water containing chloramines well
                                                                        in excess of the MRDL could experience
                                                                        stomach discomfort or anemia.
85a. Chlorine dioxide, where    0.8 (MRDLG)         0.8 (MRDL)         Some infants and young children who drink
 any 2 consecutive daily                                                water containing chlorine dioxide in
 samples taken at the entrance                                          excess of the MRDL could experience
 to the distribution system                                             nervous system effects. Similar effects
 are above the MRDL.                                                    may occur in fetuses of pregnant women
                                                                        who drink water containing chlorine
                                                                        dioxide in excess of the MRDL. Some
                                                                        people may experience anemia.
                                                                       Add for public notification only: The
                                                                        chlorine dioxide violations reported
                                                                        today are the result of exceedances at
                                                                        the treatment facility only, not within
                                                                        the distribution system which delivers
                                                                        water to consumers. Continued compliance
                                                                        with chlorine dioxide levels within the
                                                                        distribution system minimizes the
                                                                        potential risk of these violations to
                                                                        consumers.
85b. Chlorine dioxide, where    0.8 (MRDLG)         0.8 (MRDL)         Some infants and young children who drink
 one or more distribution                                               water containing chlorine dioxide in
 system samples are above the                                           excess of the MRDL could experience
 MRDL.                                                                  nervous system effects. Similar effects
                                                                        may occur in fetuses of pregnant women
                                                                        who drink water containing chlorine
                                                                        dioxide in excess of the MRDL. Some
                                                                        people may experience anemia.

[[Page 38634]]

 
                                                                       Add for public notification only: The
                                                                        chlorine dioxide violations reported
                                                                        today include exceedances of the EPA
                                                                        standard within the distribution system
                                                                        which delivers water to consumers.
                                                                        Violations of the chlorine dioxide
                                                                        standard within the distribution system
                                                                        may harm human health based on short-
                                                                        term exposures. Certain groups,
                                                                        including fetuses, infants, and young
                                                                        children, may be especially susceptible
                                                                        to nervous system effects from excessive
                                                                        chlorine dioxide exposure.
86. Control of DBP precursors   None                TT                 Total organic carbon (TOC) has no health
 (TOC).                                                                 effects. However, total organic carbon
                                                                        provides a medium for the formation of
                                                                        disinfection byproducts. These
                                                                        byproducts include trihalomethanes
                                                                        (THMs) and haloacetic acids (HAAs).
                                                                        Drinking water containing these
                                                                        byproducts in excess of the MCL may lead
                                                                        to adverse health effects, liver or
                                                                        kidney problems, or nervous system
                                                                        effects, and may lead to an increased
                                                                        risk of getting cancer.
----------------------------------------------------------------------------------------------------------------
                                          H. Other Treatment Techniques
----------------------------------------------------------------------------------------------------------------
87. Acrylamide................  Zero                TT                 Some people who drink water containing
                                                                        high levels of acrylamide over a long
                                                                        period of time could have problems with
                                                                        their nervous system or blood, and may
                                                                        have an increased risk of getting
                                                                        cancer.
88. Epichlorohydrin...........  Zero                TT                 Some people who drink water containing
                                                                        high levels of epichlorohydrin over a
                                                                        long period of time could experience
                                                                        stomach problems, and may have an
                                                                        increased risk of getting cancer.
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[FR Doc. C0-9534 Filed 6-20-00; 8:45 am]
BILLING CODE 1505-01-D