Hawaii Administrative Rules › Title 11 - DEPARTMENT OF HEALTH › Subtitle 1 - GENERAL DEPARTMENTAL PROVISIONS › Chapter 20 - RULES RELATING TO PUBLIC WATER SYSTEMS › Appendix A - STANDARD HEALTH EFFECTS LANGUAGE FOR PUBLIC NOTIFICATION (FEBRUARY 13, 2013)

Current through June, 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. Total Coliform [DAGGER]
Zero
See footnote3
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
[DAGGER]
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
1c. Fecal indicator (GWR)
Zero
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.
i.
E. coli
None
TT
1d. Ground Water Rule (GWR) 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 [DOUBLE DAGGER]
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 APPICABLE
							 SENTENCES.)
We failed to conduct the required assessment.
We failed to correct all identified sanitary defects
							 that were found during the assessment(s).
If. Subpart Y
E. coli
Assessment
							 and/or Corrective Actions Violations [DOUBLE DAGGER]
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.
Ig. E. coli [DOUBLE DAGGER]
Zero
In compliance unless one of the following conditions
							 occurs:
(1) The system has an E.coli-positive repeat sample
							 following a total coliform-positive routine sample.
(2) The system has a total coliform-positive repeat
							 sample following an E. coli-positive routine sample.
(3) The system fails to take all require repeat
							 samples following an E. coli-positive routine sample.
(4) The system fails to test for E. coli when any
							 repeat sample tests positive for total coliform.
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.
2a. Turbidity (MCL) 
							 4
None
1 NTU5/5 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
TT7
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 (lESWTR TT and LTlESWTR) 
							 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), Interim
							 Enhanced Surface Water Treatment Rule (lESWTR) and Filter Backwash Recycling
							 Rule (FBRR) violations
3, Giardia Lamblia
(SWTR/IESWTR/LTIESWTR)
Zero
TT10
Inadequately treated water may contain
							 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/LTIESWTR)
5. Heterotrophic plate count (HPC)
							 bacteria9
(SWTR/IESWTR/LTIESWTR)
6. Legionella
(SWTR/IESWTR/LTIESWTR)
7. Cryptosporidium
(lESWTR/FBRR/LTlESWTR)
C. Inorganic Chemicals (lOCs)
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. Arsenical
None
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[PHI]m)
7 MFL12
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.
D. Lead and Copper Rule
23. Lead
Zero
TT13
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
TT14
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 general toxic effects or reproductive difficulties.
34. Di (2-ethylhexyl) phthalate
Zero
0.006
Some people who drink water containing di
							 (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 (DBCP)
Zero
0.00004
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
0.00004
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
							 hexachlorocyclo-pentadiene 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, and may have an increased risk of getting cancer.
55. 1,2,3-Trichloro propane
0.0006
Some people who drink water containing TCP in excess
							 of the MCL over many years could experience problems with their nervous system,
							 respiratory system, reproductive system, liver and may have an increased risk
							 of getting cancer.
F. Volatile Organic Chemicals (VOCs)
56. 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.
57. 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.
58. Chlorobenzene (monochloro-benzene)
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.
59. 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.
60. 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.
61. 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.
62. 1,1-Dichloro ethylene
0.007
0.007
Some people who drink water containing
							 1-1
							 1,1-dichloroethylene in excess of the MCL over many years could experience
							 problems with their liver.
63. cis-1,2-Dichloro ethylene
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.
64.
trans
-1,2-Dichloro
							 ethylene
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.
65. 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.
66. 1,2-Dichloro propane
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.
67. 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.
68. 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.
69. Tetrachloro ethylene
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.
70. Toluene
1
1
Some people who drink water containing toluene in
							 excess of the MCL over many years could have problems with their nervous
							 system, kidneys or liver.
71. 1,2,4-Trichloro benzene
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 *
72. 1,1,1-Trichloro ethane
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.
73. 1,1,2-Trichloro ethane
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.
74. 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.
75. 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.
76. 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
77. Beta/photon emitters
Zero
4 mrem/yr15
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.
78. Alpha emitters
Zero
15 pCi/L16
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.
79. Combined radium (226 & 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.
80. Uranium17
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 (DBFs), Byproduct
							 Precursors, and Disifectant 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)18
81. Total trihalomethanes (TTHMs)
N/A
0.08019, 20
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.
82. Haloacetic Acids (HAA)
N/A
0.06021
Some people who drink water containing haloacetic
							 acids in excess of the MCL over many years may have an increased risk of
							 getting cancer.
83. 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.
84. 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.
85. Chlorine
4 (MRDLG)22
4.0 (MRDL)23
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.
86. 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.
67a. Chlorine dioxide, where any 2 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 which delivers
							 water to consumers. Continued compliance with chlorine dioxide levels within
							 the distribution system minimizes the potential risk of these violations to
							 consumers.
87b. Chlorine dioxide, where 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 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
88. 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 (HAA5). 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
89. 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.
90. 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.
Footnotes to Appendix A
[DAGGER] Until March 31, 2016.
[DOUBLE DAGGER] Beginning April 1, 2016.
1. MCLG - Maximum contaminant level goal.
2. MCL - Maximum contaminant level.
3. For water systems analyzing at least 40 samples per month,
				  no more than 5.0 percent of the monthly samples may be positive for total
				  coliforms. For systems analyzing fewer than 40 samples per month, no more than
				  one sample per month may be positive for total coliforms.
4. There are various regulations that set turbidity standards
				  for different types of systems, including 40 C.F.R. 141, 13, and the 1989
				  Surface Treatment Rule, the 1998 Interim Enhanced Surface Water Treatment Rule
				  and the 2002 Long Term 1 Enhanced Surface Water Treatment Rule, The MCL for the
				  monthly turbidity average is 1 NTU; the MCL for the 2-day average is 5 NTU for
				  systems that are required to filter but have not yet installed filtration (
				  40 C.F.R.
				  141.13 ).
5. NTU - Nephelometric turbidity unit.
6. There are various regulations that set turbidity standards
				  for different types of systems, including
				  40 C.F.R.
				  141.13, the 1989 Surface Water Treatment
				  Rule, the 1998 Interim Enhanced Surface Water Treatment Rule, and the 2002 Long
				  Term 1 Enhanced Surface Water Treatment Rule, Systems subject to the Surface
				  Water Treatment Rule (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 state.
7. TT - Treatment technique.
8. There are various regulations that set turbidity standards
				  for different types of systems, including
				  40 C.F.R.
				  141.13, the 1989 Surface Water Treatment Rule
				  (SWTR), the 1998 Interim Enhanced Surface Water Treatment Rule (lESWTR), and
				  the 2002 Long Term 1 Enhanced Surface Water Treatment Rule (LTIESWTR). For
				  systems subject to the lESWTR (systems serving at least 10,000 people, using
				  surface water or ground water under the direct influence of surface water),
				  that use conventional filtration or direct filtration, after January 1, 2002,
				  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 systems's combined filter effluent must not exceed 1 NTU at any time. Systems
				  subject to the lESWTR using technologies other than conventional, direct, slow
				  sand, or diatomaceous earth filtration must meet turbidity limits set by the
				  state. For systems subject to the LTIESWTR (systems serving fewer than 10,000
				  people, using surface water or ground water under the direct influence of
				  surface water) that use conventional filtration or direct filtration, after
				  January 14, 2005 the turbidity level of a system's combined filter effluent may
				  not exceed 0,3 NTU in at least 95 percent of the monthly measurements, and the
				  turbidity level of a system's combined filter effluent must not exceed 1 NTU at
				  any time. Systems subject to the LTIESWTR using technologies other than
				  conventional, direct, slow sand, or diatomaceous earth filtration must meet
				  turbidity limits set by the State.
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, lESWTR, and LTIESWTR treatment technique violations
				  that involve turbidity exceedances may use the health effects language for
				  turbidity instead.
11. These arsenic values are effective January 23, 2006.
				  Until then, the MCL is 0.05 mg/L and there is no MCLG
12. Millions fibers per liter.
13. Action Level = 0.015 mg/L.
14. Action Level = 1,3 mg/L.
15. Millirems per years.
16. Picocuries per liter.
17. The uranium MCL is effective December 8, 2003 for all
				  community water systems.
18. Surface water systems and ground water systems under the
				  direct influence of surface water are regulated under Subpart H of 40 C.F.R.
				  141. Subpart H community and non-transient non-community systems serving >=
				  10,000 must comply with section
				  11-20-45.1 DBF MCLs and
				  disinfectant maximum residual disinfectant levels (MRDLs) beginning January 1,
				  2002. All other community and non-transient non-community systems must comply
				  with section
				  11-20-45.1 DBP MCLs and
				  disinfectant MRDLs beginning January 1, 2004. Subpart H transient non-community
				  systems serving 10,000 or more persons that use chlorine dioxide as a
				  disinfectant or oxidant must comply with the chlorine dioxide MRDL beginning
				  January 1, 2002. Subpart H transient non-comraunity systems serving fewer than
				  10,000 persons and systems using only ground water not under the direct
				  influence of surface water that use chlorine dioxide as a disinfectant or
				  oxidant must comply with the chlorine dioxide MRDL beginning January 1,
				  2004.
19. Community and non-transient non-comraunity systems must
				  comply with Stage 2 Disinfection Byproduct 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
				  11-20-45.3(a)(3).
20. The MCL for total trihalomethanes is the sum of the
				  concentrations of the individual trihalomethanes.
21. The MCL for haloacetic acids is the sum of the
				  concentrations of the individual haloacetic acids.
22. MRDLG - Maximum residual disinfectant level goal.
23. MRDL - Maximum residual disinfectant
				  level.