Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart AG - INTERIM LEAD AND COPPER RULES › Appendix H - Standard Health Effects Language for Public Notification

Current through Register Vol. 48, No. 28, July 12, 2024
Contaminant
MCLG1 mg/L
MCL2 mg/L
Standard health effects language for public
							 notification
National Primary Drinking Water
							 Regulations (NPDWR):
A. Microbiological Contaminants
1a. Corresponding row 1a in appendix B to subpart Q
							 to 40 CFR
							 141 no longer applies by its own terms. This
							 statement maintains structural consistency with the federal regulations.
1b. Corresponding row 1b in appendix B to subpart Q
							 to 40 CFR
							 141 no longer applies by its own terms. This
							 statement maintains structural consistency with the federal regulations.
1c. Fecal indicators (GWR):
i. E. coli
ii. enterococci
iii. coliphage
Zero
None
None
TT
TT
TT
Fecal indicators are microbes whose presence
							 indicates that the water may be contaminated with human or animal wastes.
							 Microbes in these wastes can cause short-term health 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.
1d. Groundwater Rule TT Violations
None
TT
Inadequately treated or inadequately protected water
							 may contain disease-causing organisms. These organisms can cause symptoms such
							 as diarrhea, nausea, cramps, and associated headaches.
1e. Subpart Y Coliform Assessment and/or Corrective
							 Action Violations
N/A
TT
Coliforms are bacteria that are naturally present in
							 the environment and are used as an indicator that other, potentially harmful,
							 waterborne pathogens may be present or that a potential pathway exists through
							 which contamination may enter the drinking water distribution system. We found
							 coliforms indicating the need to look for potential problems in water treatment
							 or distribution. When this occurs, we are required to conduct assessments to
							 identify problems and to correct any problems that are found.
(The system must use the following applicable
							 sentences:)
We failed to conduct the required assessment.
We failed to correct all identified sanitary defects
							 that were found during the assessment(s).
1f. Subpart Y E. coli Assessment and/or Corrective
							 Action Violations
N/A
TT
E. coli are bacteria whose presence indicates that
							 the water may be contaminated with human or animal wastes. Human pathogens in
							 these wastes can cause short-term effects, such as diarrhea, cramps, nausea,
							 headaches, or other symptoms. They may pose a greater health risk for infants,
							 young children, the elderly, and people with severely compromised immune
							 systems. We violated the standard for E. coli, indicating the need to look for
							 potential problems in water treatment or distribution. When this occurs, we are
							 required to conduct a detailed assessment to identify problems and to correct
							 any problems that are found.
(The system must use the following applicable
							 sentences:)
We failed to conduct the required assessment.
We failed to correct all identified sanitary defects
							 that were found during the assessment that we conducted.
1g. E. coli
Zero
See footnote
22
E. coli are bacteria whose presence indicates that
							 the water may be contaminated with human or animal wastes. Human pathogens in
							 these wastes can cause short-term effects, such as diarrhea, cramps, nausea,
							 headaches, or other symptoms. They may pose a greater health risk for infants,
							 young children, the elderly, and people with severely compromised immune
							 systems.
1h. Subpart Y Seasonal System TT Violations
N/A
TT
When this violation includes the failure to monitor
							 for total coliforms or E. coli prior to serving water to the public, the
							 mandatory language found at Section
							 611.905(d)(2)
							 must be used. When this violation includes failure to complete other actions,
							 the appropriate elements found in Section
							 611.905(a) to
							 describe the violation must be used.
2a. This entry relates to the obsolete MCL for
							 turbidity in 40 CFR
							 141.13 that does not apply to any supplier in
							 Illinois. This statement maintains structural consistency with the
							 corresponding USEPA rule.
2b. Turbidity (SWTR TT)
None
TT7
Turbidity has no health effects.
							 However,6 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 and LT1ESWTR TT)
None
TT
Turbidity has no health effects.
							 However,8 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), Interim
							 Enhanced Surface Water Treatment Rule (IESWTR), Long Term 1 Enhanced Surface
							 Water Treatment Rule (LT1ESWTR), and Filter Backwash Recycling Rule (FBRR)
							 violations:
3. Giardia lamblia (SWTR/IESWTR/ LT1ESWTR)
Zero
TT10
Inadequately treated water may contain
							 disease-causing organisms. These organisms include bacteria, viruses, and
							 parasites that can cause symptoms such as nausea, cramps, diarrhea, and
							 associated headaches.
4. Viruses (SWTR/IESWTR/ LT1ESWTR)
Inadequately treated water may contain
							 disease-causing organisms. These organisms include bacteria, viruses, and
							 parasites that can cause symptoms such as nausea, cramps, diarrhea, and
							 associated headaches.
5. Heterotrophic plate count (HPC)
							 bacteria9 (SWTR/IESWTR/ LT1ESWTR)
Inadequately treated water may contain
							 disease-causing organisms.These organisms include bacteria, viruses, and
							 parasites that can cause symptoms such as nausea, cramps, diarrhea, and
							 associated headaches.
6. Legionella (SWTR/IESWTR/ LT1ESWTR)
Inadequately treated water may contain
							 disease-causing organisms. These organisms include bacteria, viruses, and
							 parasites that can cause symptoms such as nausea, cramps, diarrhea, and
							 associated headaches.
7. Cryptosporidium (IESWTR/FBRR/ LT1ESWTR)
Inadequately treated water may contain
							 disease-causing organisms. These organisms include bacteria, viruses, and
							 parasites that can cause symptoms such as nausea, cramps, diarrhea, and
							 associated headaches.
C. Inorganic Chemicals (IOCs)
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
0
0.010
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 µm)
7
							 MFL11
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 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.
D. Lead and Copper Rule
23. Lead
Zero
TT12
Exposure to lead in drinking water can cause serious
							 health effects in all age groups. Infants and children can have decreases in IQ
							 and attention span. Lead exposure can lead to new learning and behavior
							 problems or exacerbate existing learning and behavior problems. The children of
							 women who are exposed to lead before or during pregnancy can have increased
							 risk of these adverse health effects. Adults can have increased risks of heart
							 disease, high blood pressure, kidney or nervous system problems.
24. Copper
1.3
TT13
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.
E. 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.
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 toxic effects, such as weight loss, liver enlargement, or possible
							 reproductive difficulties.
34. Di(2-ethylhexyl)-phthalate
Zero
0.006
Some people who drink water containing
							 di(2-ethylhexyl)-phthalate well in excess of the MCL over many years may have
							 problems with their liver or experience reproductive difficulties, and they may
							 have an increased risk of getting cancer.
35. Dibromochloropropane (DBCP)
Zero
0.0002
Some people who drink water containing 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
							 hexachlorocyclopenta-diene 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.
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 (PCBs)
Zero
0.0005
Some people who drink water containing 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.
F. 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 (monochlorobenzene)
0.1
0.1
Some people who drink water containing 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-dichloro-ethylene 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.
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.
G. Radioactive Contaminants
76. Beta/photon emitters
Zero
4
							 mrem/yr14
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/L15
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 and 228)
Zero
5 pCi/L
Some people who drink water containing radium 226 or
							 228 in excess of the MCL over many years may have an increased risk of getting
							 cancer.
79. Uranium
Zero
30 µg/L
Some people who drink water containing uranium in
							 excess of the MCL over many years may have an increased risk of getting cancer
							 and kidney toxicity.
H. Disinfection Byproducts (DBPs), Byproduct
							 Precursors, and Disinfectant Residuals: If 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). USEPA sets standards for controlling the levels of disinfectants and
							 DBPs in drinking water, including trihalomethanes (THMs) and haloacetic acids
							 (HAA5) 
							 16
80. Total trihalomethanes (TTHMs)
N/A
0.080
													17,18
Some people who drink water containing
							 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.
81. Haloacetic Acids (HAA5)
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.
82. 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.
83. 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.
84. 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.
85. 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, if any two consecutive daily
							 samples taken at the entrance to the distribution system are above the
							 MRDL
0.8
							 (MRDLG)
0.8
							 (MRDL)
Some infants and young children who drink water
							 containing chlorine dioxide in excess of the MRDL could experience 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.
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 that delivers water
							 to consumers. Continued compliance with chlorine dioxide levels within the
							 distribution system minimizes the potential risk of these violations to
							 consumers.
86a. Chlorine dioxide, if one or more distribution
							 system samples are above the MRDL
0.8
							 (MRDLG)
0.8
							 (MRDL)
Some infants and young children who drink water
							 containing chlorine dioxide in excess of the MRDL could experience 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.
Add for public notification only: The chlorine
							 dioxide violations reported today include exceedances of the USEPA standard
							 within the distribution system that 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.
87. Control of DBP precursors (TOC)
None
TT
Total organic carbon (TOC) has no health 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.
I. Other Treatment Techniques:
88. 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.
89. 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.
Appendix H - Endnotes
1. "MCLG" means maximum contaminant level goal.
2. "MCL" means maximum contaminant level.
3. This endnote corresponds with endnote 3 to appendix B to
				  subpart Q to 40 CFR
				  14, which applied only to paragraph 1a in the
				  table, which no longer has operative effect. This statement maintains
				  structural consistency with the corresponding federal rules.
4. In the corresponding USEPA rule, this note relates to an
				  entry for the obsolete MCL for turbidity that does not apply to any supplier in
				  Illinois. This statement maintains structural consistency with the
				  corresponding USEPA rule.
5. In the corresponding USEPA rule, this note relates to an
				  entry for the obsolete MCL for turbidity that does not apply to any supplier in
				  Illinois. This statement maintains structural consistency with the
				  corresponding USEPA rule.
6. There are various regulations that set turbidity standards
				  for different types of systems, including the 1989 SWTR, the 1998 IESWTR, and
				  the 2002 LT1ESWTR. A supplier subject to the SWTR (both filtered and
				  unfiltered) may not exceed 5 NTU. In addition, in filtered systems, 95 percent
				  of samples each month must not exceed
				  0.5 NTU in systems using
				  conventional or direct filtration and must not exceed 1 NTU in systems using
				  slow sand or diatomaceous earth filtration or other filtration technologies
				  approved by the Agency.
7. "TT" means treatment technique.
8. There are various regulations that set turbidity standards
				  for different types of systems, including the 1989 SWTR, the 1998 IESWTR, and
				  the 2002 LT1ESWTR. For a supplier subject to the IESWTR (a supplier serving at
				  least 10,000 people, using surface water or groundwater under the direct
				  influence of surface water), that use conventional filtration or direct
				  filtration, the turbidity level of a system's combined filter effluent may not
				  exceed 0.3 NTU in at least 95 percent
				  of monthly measurements, and the turbidity level of a system's combined filter
				  effluent must not exceed 1 NTU at any time. A supplier subject to the IESWTR
				  using technologies other than conventional, direct, slow sand, or diatomaceous
				  earth filtration must meet turbidity limits set by the Agency. For a supplier
				  subject to the LT1ESWTR (a supplier serving fewer than 10,000 people, using
				  surface water or groundwater under the direct influence of surface water) using
				  conventional filtration or direct filtration, the turbidity level of the
				  supplier's combined filter effluent may not exceed
				  0.3 NTU in at least 95 percent
				  of monthly measurements, and the turbidity level of the supplier's combined
				  filter effluent must not exceed 1 NTU at any time. A supplier subject to the
				  LT1ESWTR using technologies other than conventional, direct, slow sand, or
				  diatomaceous earth filtration must meet turbidity limits set by the
				  Agency.
9. The bacteria detected by heterotrophic plate count (HPC)
				  are not necessarily harmful. HPC is simply an alternative method of determining
				  disinfectant residual levels. The number of such bacteria is an indicator of
				  whether there is enough disinfectant in the distribution system.
10. SWTR, IESWTR, and LT1ESWTR treatment technique violations
				  that involve turbidity exceedances may use the health effects language for
				  turbidity instead.
11. Millions of fibers per liter.
12. Action Level =
				  0.015 mg/L.
13. Action Level =
				  1.3 mg/L.
14. Millirems per year.
15. Picocuries per liter.
16. A surface water system supplier or a groundwater system
				  supplier under the direct influence of surface water is regulated under Subpart
				  B. A Supbart B community water system supplier or a non-transient non-community
				  system supplier must comply with Subpart I DBP MCLs and disinfectant maximum
				  residual disinfectant levels (MRDLs). A Subpart B transient non-community
				  system supplier using chlorine dioxide as a disinfectant or oxidant must comply
				  with the chlorine dioxide MRDL.
17. Community and non-transient non-community systems must
				  comply with Subpart Y TTHM and HAA5 MCLs of
				  0.080 mg/L and
				  0.060 mg/L, respectively (with
				  compliance calculated as a locational running annual average) on the schedule
				  in Section 611.970.
18. The MCL for total trihalomethanes is the sum of the
				  concentrations of the individual trihalomethanes.
19. The MCL for haloacetic acids is the sum of the
				  concentrations of the individual haloacetic acids.
20. "MRDLG" means maximum residual disinfectant level
				  goal.
21. "MRDL" means maximum residual disinfectant level.
22. The supplier is in compliance unless one of the following
				  conditions occurs: (1) the supplier's system has an E. coli-positive repeat
				  sample following a total coliform-positive routine sample; (2) the supplier's
				  system has a total coliform-positive repeat sample following an E.
				  coli-positive routine sample; (3) the supplier fails to take all required
				  repeat samples following an E. coli-positive routine sample; or (4) the
				  supplier fails to test for E. coli when any repeat sample tests positive for
				  total coliform.
BOARD NOTE: This Appendix H derives from appendix B to
					 subpart Q to 40 CFR
					 141.