Indiana Administrative Code
Title 327 - WATER POLLUTION CONTROL DIVISION
Article 8 - PUBLIC WATER SUPPLY
Rule 2.1 - Consumer Confidence Reports
Section 2.1-6 - Other required information

Universal Citation: 327 IN Admin Code 2.1-6

Current through March 20, 2024

Authority: IC 13-13-5; IC 13-14-8-2; IC 13-14-8-7; IC 13-18-3-1; IC 13-18-3-2; IC 13-18-16-8; IC 13-18-16-9

Affected: IC 13-18-2; IC 13-18-16

Sec. 6.

(a) In order to convert MCLs to numbers greater than or equal to one and zero-tenths (1.0) for the required table referenced in section 3 of this rule, a CWS shall use the following table:

Table 6-1: Converting MCL Compliance Values for Consumer Confidence Reports

Contaminant MCL in Compliance Units (mg/l) multiply by... MCL in CCR Units MCLG in CCR Units
Microbiological contaminants
1a. Total coliform bacteria1 5% of monthly samples are positive (CWSs that collect forty (40) or more samples per month); one (1) positive monthly sample (CWSs that collect fewer than forty (40) samples per month). 5% of monthly samples are positive (CWSs that collect forty (40) or more samples per month); one (1) positive monthly sample (CWSs that collect fewer than forty (40) samples per month). 0
1b. Total coliform bateria2 TT TT n/a
2a. Fecal coliform and E. coli1 0 0 0
2b. E. coli2 Routine and repeat samples are total coliform-positive and either is E. coli-positive or the CWS fails to take repeat samples following E. coli-positive routine sample or the CWS fails to analyze total coliform-positive repeat sample for E. coli. Routine and repeat samples are total coliform-positive and either is E. coli-positive or the CWS fails to take repeat samples following E. coli-positive routine sample or the CWS fails to analyze total coliform-positive repeat sample for E. coli. 0
3. Total organic carbon TT TT n/a
4. Turbidity TT TT (NTU) n/a
Radioactive contaminants
5. Beta/photon emitters 4 mrem/year 4 mrem/year 0
6. Alpha emitters 15 pCi/1 15 pCi/1 0
7. Combined radium 5 pCi/1 5 pCi/1 0
8. Uranium 0.030 1,000 30 ppb 0
Inorganic contaminants
9. Antimony 0.006 1,000 6 ppb 6
10. Arsenic 0.010 3 1,000 101 ppb 01
11. Asbestos 7 MFL 7 MFL 7
12. Barium 2 2 ppm 2
13. Beryllium 0.004 1,000 4 ppb 4
14. Bromate 0.10 1,000 10 ppb 0
15. Cadmium 0.005 1,000 5 ppb 5
16. Chloramines MRDL = 4.0 MRDL = 4.0 ppm MRDLG = 4
17. Chlorine MRDL = 4.0 MRDL = 4.0 ppm MRDLG = 4
18. Chlorine dioxide MRDL = 0.8 1,000 MRDL = 800 ppb MRDLG = 800
19. Chlorite 1 1 ppm 0.8
20. Chromium 0.1 1,000 100 ppb 100
21.Copper AL = 1.3 AL = 1.3 ppm 1.3
22. Cyanide 0.2 1,000 200 ppb 200
23. Fluoride 4 4 ppm 4
24. Lead AL = 0.015 1,000 AL = 15 ppb 0
25. Mercury (inorganic) 0.002 1,000 2 ppb 2
26. Nitrate (as nitrogen) 10 10 ppm 10
27. Nitrite (as nitrogen) 1 1 ppm 1
28. Selenium 0.05 1,000 50 ppb 50
29. Thallium 0.002 1,000 2 ppb 0.5
Synthetic organic contaminants including pesticides and herbicides
30. 2,4-D 0.07 1,000 70 ppb 70
31. 2,4,5-TP (silvex) 0.05 1,000 50 ppb 50
32. Acrylamide TT TT 0
33. Alachlor 0.002 1,000 2 ppb 0
34. Atrazine 0.003 1,000 3 ppb 3
35. Benzo(a)pyrene (PAH) 0.0002 1,000,000 200 ppt 0
36. Carbofuran 0.04 1,000 40 ppb 40
37. Chlordane 0.002 1,000 2 ppb 0
38. Dalapon 0.2 1,000 200 ppb 200
39. Di(2-ethylhexyl)adipate .4 1,000 400 ppb 400
40. Di(2-ethylhexyl)phthalate 0.006 1,000 6 ppb 0
41. Dibromochloropropane 0.0002 1,000,000 200 ppt 0
42. Dinoseb 0.007 1,000 7 ppb 7
43. Diquat 0.02 1,000 20 ppb 20
44. Dioxin (2,3,7,8-TCDD) 0.00000003 1,000,000,000 30 ppq 0
45. Endothall 0.1 1,000 100 ppb 100
46. Endrin 0.002 1,000 2 ppb 2
47. Epichlorohydrin TT TT 0
48. Ethylene dibromide 0.00005 1,000,000 50 ppt 0
49. Glyphosate 0.7 1,000 700 ppb 700
50. Heptachlor 0.0004 1,000,000 400 ppt 0
51. Heptachlor epoxide 0.0002 1,000,000 200 ppt 0
52. Hexachlorobenzene 0.001 1,000 1 ppb 0
53. Hexachlorocyclopentadie ne 0.05 1,000 50 ppb 50
54. Lindane 0.0002 1,000,000 200 ppt 200
55. Methoxychlor 0.04 1,000 40 ppb 40
56. Oxamyl (vydate) 0.2 1,000 200 ppb 200
57. PCBs (polychlorinated biphenyls) 0.0005 1,000,000 500 ppt 0
58. Pentachlorophenol 0.001 1,000 1 ppb 0
59. Picloram 0.5 1,000 500 ppb 500
60. Simazine 0.004 1,000 4 ppb 4
61. Toxaphene 0.003 1,000 3 ppb 0
Volatile organic contamina nts
62. Benzene 0.005 1,000 5 ppb 0
63. Carbon tetrachloride 0.005 1,000 5 ppb 0
64. Chlorobenzene 0.1 1,000 100 ppb 100
65. o-Dichlorobenzene 0.6 1,000 600 ppb 600
66. p-Dichlorobenzene 0.075 1,000 75 ppb 75
67. 1,2-Dichloroethane 0.005 1,000 5 ppb 0
68. 1,1-Dichloroethylene 0.007 1,000 7 ppb 7
69. cis-1,2-Dichloroethylene 0.07 1,000 70 ppb 70
70. trans-1,2-Dichloroethylene 0.1 1,000 100 ppb 100
71. Dichloromethane 0.005 1,000 5 ppb 0
72. 1,2-Dichloropropane 0.005 1,000 5 ppb 0
73. Ethylbenzene 0.7 1,000 700 ppb 700
74. HAA5 0.060 1,000 60 ppb n/a
75. Styrene 0.1 1,000 100 ppb 100
76. Tetrachloroethylene 0.005 1,000 5 ppb 0
77. 1,2,4-Trichlorobenzene 0.07 1,000 70 ppb 70
78. 1,1,1-Trichloroethane 0.2 1,000 200 ppb 200
79. 1,1,2-Trichloroethane 0.005 1,000 5 ppb 3
80. Trichloroethylene 0.005 1,000 5 ppb 0
81. TTHMs (total trihalomethanes) 0.080 1,000 80 ppb n/a
82. Toluene 1 1 ppm 1
83. Vinyl chloride 0.002 1,000 2 ppb 0
84. Xylenes 10 10 ppm 10
1 Until March 31, 2016.

2 Beginning April 1, 2016.

3 These arsenic values are effective January 1, 2006. Until then, the MCL is 0.05 mg/L and there is no MCLG.

Key:

AL = Action level.

MCL = Maximum contaminant level.

MCLG = Maximum contaminant level goal.

MFL = Million fibers per liter.

MRDL = Maximum residual disinfectant level.

MRDLG = Maximum residual disinfectant level goal.

mrem/year = Millirems per year (a measure of radiation absorbed by the body).

N/A = Not applicable

NTU = Nephelometric turbidity units.

pCi/l = Picocuries per liter (a measure of radioactivity).

ppm = Parts per million, or milligrams per liter (mg/l).

ppb = Parts per billion, or micrograms per liter (µg/l).

ppt = Parts per trillion, or nanograms per liter (ng/l).

ppq = Parts per quadrillion, or picograms per liter (pg/l).

TT = Treatment technique.

(b) In order to show potential sources of contamination for the table required by section 3 of this rule, a CWS shall use the following table:

Table 6-2: Regulated Contaminants

Contaminant (units) MCLG MCL Major Sources in Drinking Water
Microbiological contaminants
1a. Total coliform bacteria1 0 5% of monthly samples are positive (CWSs that collect forty (40) or more samples per month); one (1) positive monthly sample (CWSs that collect fewer than forty (40) samples per month). Naturally present in the environment.
1b. Total coliform bacteria2 n/a TT Naturally present in the environment.
2a. Fecal coliform and E. coli1 0 A routine sample and a repeat sample are total coliform positive, and one (1) is also fecal coliform or E. coli positive. Human and animal fecal waste.
2b. E. coli2 0 Routine and repeat samples are total coliform-positive and either is E. coli-positive or the CWS fails to take repeat samples following E. coli-positive routine sample or the CWS fails to analyze total coliform-positive repeat sample for E. coli. Human and animal fecal waste.
3. Total organic carbon n/a TT Naturally present in the environment.
4. Turbidity n/a TT Soil run-off.
Radioactive contaminants
5. Beta/photon emitters (mrem/year) 0 4 Decay of natural and manmade deposits.
6. Alpha emitters (pCi/1) 0 15 Erosion of natural deposits.
7. Combined radium (pCi/1) 0 5 Erosion of natural deposits.
8. Uranium (ppb) 0 30 Erosion of natural deposits.
Inorganic contaminants
9. Antimony (ppb) 6 6 Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder.
10. Arsenic (ppb) 0 3 10 3 Erosion of natural deposits; run-off from orchards; runoff from glass and electronics production wastes.
11. Asbestos (MFL) 7 7 Decay of asbestos cement water mains; erosion of natural deposits.
12. Barium (ppm) 2 2 Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits.
13. Beryllium (ppb) 4 4 Discharge from metal refineries and coal-burning factories; discharge from electrical, aerospace, and defense industries.
14. Bromate (ppb) 0 10 Byproduct of drinking water disinfection.
15. Cadmium (ppb) 5 5 Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; run-off from waste batteries and paints.
16. Chloramines (ppm) MRDLG = 4 MRDL = 4.0 Water additive used to control microbes.
17. Chlorine (ppm) MRDLG = 4 MRDL = 4.0 Water additive used to control microbes.
18. Chlorine dioxide (ppb) MRDLG = 800 MRDL = 800 Water additive used to control microbes.
19. Chlorite (ppm) 0.8 1 Byproduct of drinking water disinfection.
20. Chromium (ppb) 100 100 Discharge from steel and pulp mills; erosion of natural deposits.
21. Copper (ppm) 1.3 AL = 1.3 Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives.
22. Cyanide (ppb) 200 200 Discharge from steel/metal factories; discharge from plastic and fertilizer factories.
23. Fluoride (ppm) 4 4 Erosion of natural deposits; water additive that promotes strong teeth; discharge from fertilizer and aluminum factories.
24. Lead (ppb) 0 AL = 15 Corrosion of household plumbing systems; erosion of natural deposits.
25. Mercury (inorganic) (ppb) 2 2 Erosion of natural deposits; discharge from refineries and factories; run-off from landfills; run-off from cropland.
26. Nitrate (as nitrogen) (ppm) 10 10 Run-off from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits.
27. Nitrite (as nitrogen) (ppm) 1 1 Run-off from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits.
28. Selenium (ppb) 50 50 Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines.
29. Thallium (ppb) 0.5 2 Leaching from ore-processing sites; discharge from electronics, glass, and drug factories.
Synthetic organic contaminants, including pesticides and herbicides
30. 2,4-D (ppb) 70 70 Run-off from herbicide used on row crops.
31. 2,4,5-TP (Silvex) (ppb) 50 50 Residue of banned herbicide.
32. Acrylamide 0 TT Added to water during sewage/wastewater treatment.
33. Alachlor (ppb) 0 2 Run-off from herbicide used on row crops.
34. Atrazine (ppb) 3 3 Run-off from herbicide used on row crops.
35. Benzo(a)pyrene (PAH) (ppt) 0 200 Leaching from linings of water storage tanks and distribution lines.
36. Carbofuran (ppb) 40 40 Leaching of soil fumigant used on rice and alfalfa.
37. Chlordane (ppb) 0 2 Residue of banned termiticide.
38. Dalapon (ppb) 200 200 Run-off from herbicide used on rights-of-way.
39. Di(2-ethylhexyl)adipate (ppb) 400 400 Discharge from chemical factories.
40. Di(2-ethylhexyl)phthalate (ppb) 0 6 Discharge from rubber and chemical factories.
41. Dibromochloropropane (ppt) 0 200 Run-off/leaching from soil fumigant used on soybeans, cotton, pineapples, and orchards.
42. Dinoseb (ppb) 7 7 Run-off from herbicide used on soybeans and vegetables.
43. Diquat (ppb) 20 20 Run-off from herbicide use.
44. Dioxin (2,3,7,8-TCDD) (ppq) 0 30 Emissions from waste incineration and other combustion; discharge from chemical factories.
45. Endothall (ppb) 100 100 Run-off from herbicide use.
46. Endrin (ppb) 2 2 Residue of banned insecticide.
47. Epichlorohydrin 0 TT Discharge from industrial chemical factories; an impurity of some water treatment chemicals.
48. Ethylene dibromide (ppt) 0 50 Discharge from petroleum refineries.
49. Glyphosate (ppb) 700 700 Run-off from herbicide use.
50. Heptachlor (ppt) 0 400 Residue of banned pesticide.
51. Heptachlor epoxide (ppt) 0 200 Breakdown of heptachlor.
52. Hexachlorobenzene (ppb) 0 1 Discharge from metal refineries and agricultural chemical factories.
53. Hexachlorocyclopentadiene (ppb) 50 50 Discharge from chemical factories.
54. Lindane (ppt) 200 200 Run-off/leaching from insecticide used on cattle, lumber, and gardens.
55. Methoxychlor (ppb) 40 40 Run-off/leaching from insecticide used on fruits, vegetables, alfalfa, and livestock.
56. Oxamyl (vydate) (ppb) 200 200 Run-off/leaching from insecticide used on apples, potatoes, and tomatoes.
57. PCBs (polychlorinated biphenyls) (ppt) 0 500 Run-off from landfills; discharge of waste chemicals.
58. Pentachlorophenol (ppb) 0 1 Discharge from wood preserving factories.
59. Picloram (ppb) 500 500 Herbicide run-off.
60. Simazine (ppb) 4 4 Herbicide run-off.
61. Toxaphene (ppb) 0 3 Run-off/leaching from insecticide used on cotton and cattle.
Volatile organic contaminants
62. Benzene (ppb) 0 5 Discharge from factories; leaching from gas storage tanks and landfills.
63. Carbon tetrachloride (ppb) 0 5 Discharge from chemical plants and other industrial activities.
64. Chlorobenzene (ppb) 100 100 Discharge from chemical and agricultural chemical factories.
65. o-Dichlorobenzene (ppb) 600 600 Discharge from industrial chemical factories.
66. p-Dichlorobenzene (ppb) 75 75 Discharge from industrial chemical factories.
67. 1,2-Dichloroethane (ppb) 0 5 Discharge from industrial chemical factories.
68. 1,1-Dichloroethylene (ppb) 7 7 Discharge from industrial chemical factories.
69. cis-1,2-Dichloroethylene (ppb) 70 70 Discharge from industrial chemical factories.
70. trans-1,2-Dichloroethylene (ppb) 100 100 Discharge from industrial chemical factories.
71. Dichloromethane (ppb) 0 5 Discharge from pharmaceutical and chemical factories.
72. 1,2-Dichloropropane (ppb) 0 5 Discharge from industrial chemical factories.
73. Ethylbenzene (ppb) 700 700 Discharge from petroleum refineries.
74. HAA5 (ppb) n/a 60 Byproduct of drinking water disinfection.
75. Styrene (ppb) 100 100 Discharge from rubber and plastic factories; leaching from landfills.
76. Tetrachloroethylene (ppb) 0 5 Discharge from factories and dry cleaners.
77. 1,2,4-Trichlorobenzene (ppb) 70 70 Discharge from textile-finishing factories.
78. 1,1,1-Trichloroethane (ppb) 200 200 Discharge from metal degreasing sites and other factories.
79. 1,1,2-Trichloroethane (ppb) 3 5 Discharge from industrial chemical factories.
80. Trichloroethylene (ppb) 0 5 Discharge from metal degreasing sites and other factories.
81. TTHMs (total trihalomethanes) (ppb) n/a 80 Byproduct of drinking water chlorination.
82. Toluene (ppm) 1 1 Discharge from petroleum factories.
83. Vinyl chloride (ppb) 0 2 Leaching from PVC piping; discharge from plastics factories.
84. Xylenes (ppm) 10 10 Discharge from petroleum factories; discharge from chemical factories.
1 Until March 31, 2016.

2 Beginning April 1, 2016.

3 These arsenic values are effective January 1, 2006. Until then, the MCL is 0.05 mg/l and there is no MCLG.

Key:

AL = Action level.

MCL = Maximum contaminant level.

MCLG = Maximum contaminant level goal.

MFL = Million fibers per liter.

MRDL = Maximum residual disinfectant level.

MRDLG = Maximum residual disinfectant level goal.

mrem/year = millirems per year (a measure of radiation absorbed by the body).

N/A = Not applicable.

NTU = Nephelometric turbidity units.

pCi/l = Picocuries per liter (a measure of radioactivity).

ppm = Parts per million, or milligrams per liter (mg/l).

ppb = Parts per billion, or micrograms per liter ([MICRO];g/l).

ppt = Parts per trillion, or nanograms per liter (ng/l).

ppq = Parts per quadrillion, or picograms per liter (pg/l).

TT = Treatment technique.

(c) The language in section 17 of this rule must be used if there is a violation referenced in section 3 of this rule and health effects language is required.

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