Indiana Administrative Code › Title 327 - WATER POLLUTION CONTROL DIVISION › Article 2 - WATER QUALITY STANDARDS › Rule 11 - Ground Water Quality Standards › Section 11-6 - Criteria for drinking water class ground water

Current through July 10, 2024
Authority: IC 13-18
Affected: IC 4-22-2; IC 13-14-9; IC 13-18-4; IC
				  13-18-17
Sec. 6.
(a) The
				following numeric criteria are health protective goals for untreated ground
				water used as drinking water and are the maximum permissible level of a
				contaminant in drinking water class ground water:
(1) The following are the numeric criteria
				for select inorganic contaminants:
Contaminant
Criterion (mg/l unless
							 noted)1
Antimony
0.006
Arsenic
0.010
Contaminant
Criterion (mg/l unless
							 noted)1
Asbestos
7 MFL2
Barium
2
Beryllium
0.004
Cadmium
0.005
Chromium (total)
0.1
Combined beta/photon emitters
4 mrem/yr3
Cyanide (free)
0.2
Fluoride
4
Gross alpha particle activity (including radium 226
							 but excluding radon and uranium)
15 pCi/L4
Lead
0.015
Mercury (inorganic)
0.002
Nitrate (as N)
10
Nitrite (as N)
1
Radium 226 and 228 (combined)
5 pCi/L
Selenium
0.05
Thallium
0.002
Notes:
1mg/l is milligrams per
				  liter.
2MFL is million fibers per liter
				  greater than 10 micrometers in length.
3mrem/yr is millirems per
				  year.
4pCi/L is picocuries per
				  liter.
(2) The following are
				the numeric criteria for select organic contaminants:
Table 6(a)(2)
Numeric Criteria for Organic Contaminants in Drinking Water
				  Class Ground Water
Chemical Abstract Regis
try Numbers Contaminant
Criterion (mg/l unless noted)
15972-60-8
Alachlor
0.002
1912-24-9
Atrazine
0.003
71-43-2
Benzene
0.005
50-32-8
Benzo(a)pyrene
0.0002
1563-66-2
Carbofuran
0.04
56-23-5
Carbon tetrachloride
0.005
57-74-9
Chlordane
0.002
94-75-7
2,4-D
0.07
75-99-0
Dalapon
0.2
103-23-1
Di(2-ethylhexyl)adipate
0.4
96-12-8
Dibromochloropropane (DBCP)
0.0002
95-50-1
Dichlorobenzene, 1,2-
0.6
106-46-7
Dichlorobenzene, 1,4-
0.075
107-06-2
Dichloroethane, 1,2-
0.005
75-35-4
Dichloroethylene, 1,1-
0.007
156-59-2
Dichloroethylene, cis-1,2-
0.07
156-60-5
Dichloroethylene, trans-1,2-
0.1
75-09-2
Dichloromethane or methylene chloride
0.005
78-87-5
Dichloropropane, 1,2-
0.005
117-81-7
Di(2-ethylhexyl)phthalate
0.006
88-85-7
Dinoseb
0.007
85-00-7
Diquat
0.02
145-73-3
Endothall
0.1
72-20-8
Endrin
0.002
100-41-4
Ethylbenzene
0.7
106-93-4
Ethylene dibromide (EDB)
0.00005
1071-83-6
Glyphosate
0.7
76-44-8
Heptachlor
0.0004
1024-57-3
Heptachlor epoxide
0.0002
118-74-1
Hexachlorobenzene
0.001
77-47-4
Hexachlorocyclopentadiene
0.05
58-89-9
Lindane (gamma-BHC)
0.0002
72-43-5
Methoxychlor
0.04
108-90-7
Monochlorobenzene
0.1
23135-22-0
Oxamyl (vydate)
0.2
87-89-5
Pentachlorophenol
0.001
1918-02-1
Picloram
0.5
1336-36-3
Polychlorinated biphenyls (PCBs)
0.0005
122-34-9
Simazine
0.004
100-42-5
Styrene
0.1
1746-01-6
2,3,7,8-TCDD (Dioxin)
0.00000003
127-18-4
Tetrachloroethylene
0.005
108-88-3
Toluene
1
8001-35-2
Toxaphene
0.003
93-72-1
2,4,5-TP (Silvex)
0.05
120-82-1
Trichlorobenzene, 1,2,4-
0.07
71-55-6
Trichloroethane, 1,1,1-
0.2
79-00-5
Trichloroethane, 1,1,2-
0.005
79-01-6
Trichloroethylene
0.005
75-01-4
Vinyl chloride
0.002
1330-20-7
Xylenes (total)
10
(3) A
				drinking water class numeric criterion may be added to the criteria established
				in this subsection if adopted according to IC 4-22-2 and IC 13-14-9.