Wisconsin Administrative Code
Department of Natural Resources
NR 100-199 - Environmental Protection General
Chapter NR 140 - Groundwater Quality
Subchapter II - Groundwater Quality Standards
Section NR 140.10 - Public health related groundwater standards
The groundwater quality standards for substances of public health concern are listed in Table 1.
Note: For all substances that have carcinogenic, mutagenic or teratogenic properties or interactive effects, the preventive action limit is 10% of the enforcement standard. The preventive action limit is 20% of the enforcement standard for all other substances that are of public health concern. Enforcement standards and preventive action limits for additional substances will be added to Table I as recommendations are developed pursuant to ss. 160.07, 160.13 and 160.15, Stats.
Table 1
Public Health Groundwater Quality Standards
|
Substance1 |
Enforcement Standard (micrograms per liter - except as noted) |
Preventive Action Limit (micrograms per liter - except as noted) |
|
Acetochlor |
7 |
0.7 |
|
Acetochlor ethane sulfonic acid + oxanilic acid (Acetochlor - ESA + OXA) |
230 |
46 |
|
Acetone |
9 milligrams/liter (mg/1) |
1.8 mg/1 |
|
Alachlor |
2 |
0.2 |
|
Alachlor ethane sulfonic acid |
20 |
4 |
|
(Alachlor - ESA) |
||
|
Aldicarb |
10 |
2 |
|
Aluminum |
200 |
40 |
|
Ammonia (as N) |
9.7 mg/l |
0.97 mg/l |
|
Anthracene |
3000 |
600 |
|
Antimony |
6 |
1.2 |
|
Arsenic |
10 |
1 |
|
Asbestos |
7 million fibers per liter (MFL) |
0.7 MFL |
|
Atrazine, total chlorinated residues |
32 |
0.32 |
|
Bacteria, E. coli |
0 |
0 |
|
Barium |
2 mg/l |
0.4 mg/l |
|
Bentazon |
300 |
60 |
|
Benzene |
5 |
0.5 |
|
Benzo(b)fluoranthene |
0.2 |
0.02 |
|
Benzo(a)pyrene |
0.2 |
0.02 |
|
Beryllium |
4 |
0.4 |
|
Boron |
1000 |
200 |
|
Bromodichloromethane |
0.6 |
0.06 |
|
Bromoform |
4.4 |
0.44 |
|
Bromomethane |
10 |
1 |
|
Butylate |
400 |
80 |
|
Cadmium |
5 |
0.5 |
|
Carbaryl |
40 |
4 |
|
Carbofuran |
40 |
8 |
|
Carbon disulfide |
1000 |
200 |
|
Carbon tetrachloride |
5 |
0.5 |
|
Chloramben |
150 |
30 |
|
Chlordane |
2 |
0.2 |
|
Chlorodifluoromethane |
7 mg/l |
0.7 mg/l |
|
Chloroethane |
400 |
80 |
|
Chloroform |
6 |
0.6 |
|
Chlorpyrifos |
2 |
0.4 |
|
Chloromethane |
30 |
3 |
|
Chromium (total) |
100 |
10 |
|
Chrysene |
0.2 |
0.02 |
|
Cobalt |
40 |
8 |
|
Copper |
1300 |
130 |
|
Cyanazine |
1 |
0.1 |
|
Cyanide, free3 |
200 |
40 |
|
Dacthal |
70 |
14 |
|
1,2-Dibromoethane (EDB) |
0.05 |
0.005 |
|
Dibromochloromethane |
60 |
6 |
|
1,2-Dibromo-3-chloropropane (DBCP) |
0.2 |
0.02 |
|
Dibutyl phthalate |
1000 |
100 |
|
Dicamba |
300 |
60 |
|
1,2-Dichlorobenzene |
600 |
60 |
|
1,3-Dichlorobenzene |
600 |
120 |
|
1,4-Dichlorobenzene |
75 |
15 |
|
Dichlorodifluoromethane |
1000 |
200 |
|
1,1-Dichloroethane |
850 |
85 |
|
1,2-Dichloroethane |
5 |
0.5 |
|
1,1-Dichloroethylene |
7 |
0.7 |
|
1,2-Dichloroethylene (cis) |
70 |
7 |
|
1,2-Dichloroethylene (trans) |
100 |
20 |
|
2,4-Dichlorophenoxyacetic Acid (2,4-D) |
70 |
7 |
|
1,2-Dichloropropane |
5 |
0.5 |
|
1,3-Dichloropropene (cis/trans) |
0.4 |
0.04 |
|
Di (2-ethylhexyl) phthalate |
6 |
0.6 |
|
Dimethenamid/Dimethenamid-P |
50 |
5 |
|
Dimethoate |
2 |
0.4 |
|
2,4-Dinitrotoluene |
0.05 |
0.005 |
|
2,6-Dinitrotoluene |
0.05 |
0.005 |
|
Dinitrotoluene, Total Residues4 |
0.05 |
0.005 |
|
Dinoseb |
7 |
1.4 |
|
1,4-Dioxane |
3 |
0.3 |
|
Dioxin (2, 3, 7, 8-TCDD) |
0.00003 |
0.000003 |
|
Endrin |
2 |
0.4 |
|
EPTC |
250 |
50 |
|
Ethylbenzene |
700 |
140 |
|
Ethyl ether |
1000 |
100 |
|
Ethylene glycol |
14 mg/l |
2.8 mg/l |
|
Fluoranthene |
400 |
80 |
|
Fluorene |
400 |
80 |
|
Fluoride |
4 mg/l |
0.8 mg/l |
|
Fluorotrichloromethane |
3490 |
698 |
|
Formaldehyde |
1000 |
100 |
|
Heptachlor |
0.4 |
0.04 |
|
Heptachlor epoxide |
0.2 |
0.02 |
|
Hexachlorobenzene |
1 |
0.1 |
|
N-Hexane |
600 |
120 |
|
Hydrogen sulfide |
30 |
6 |
|
Lead |
15 |
1.5 |
|
Lindane |
0.2 |
0.02 |
|
Manganese |
300 |
60 |
|
Mercury |
2 |
0.2 |
|
Methanol |
5000 |
1000 |
|
Methoxychlor |
40 |
4 |
|
Methylene chloride |
5 |
0.5 |
|
Methyl ethyl ketone (MEK) |
4 mg/l |
0.8 mg/l |
|
Methyl isobutyl ketone (MIBK) |
500 |
50 |
|
Methyl tert-butyl ether (MTBE) |
60 |
12 |
|
Metolachlor/s-Metolachlor |
100 |
10 |
|
Metolachlor ethane sulfonic acid + oxanilic acid (Metolachlor - ESA + OXA) |
1.3 mg/l |
0.26 mg/l |
|
Metribuzin |
70 |
14 |
|
Molybdenum |
40 |
8 |
|
Monochlorobenzene |
100 |
20 |
|
Naphthalene |
100 |
10 |
|
Nickel |
100 |
20 |
|
Nitrate (as N) |
10 mg/l |
2 mg/l |
|
Nitrate + Nitrite (as N) |
10 mg/l |
2 mg/l |
|
Nitrite (as N) |
1 mg/1 |
0.2 mg/l |
|
N-Nitrosodiphenylamine |
7 |
0.7 |
|
Pentachlorophenol (PCP) |
1 |
0.1 |
|
Perchlorate |
1 |
0.l |
|
Phenol |
2 mg/l |
0.4 mg/l |
|
Picloram |
500 |
100 |
|
Polychlorinated biphenyls (PCBs) |
0.03 |
0.003 |
|
Prometon |
100 |
20 |
|
Propazine |
10 |
2 |
|
Pyrene |
250 |
50 |
|
Pyridine |
10 |
2 |
|
Selenium |
50 |
10 |
|
Silver |
50 |
10 |
|
Simazine |
4 |
0.4 |
|
Styrene |
100 |
10 |
|
Tertiary Butyl Alcohol (TBA) |
12 |
1.2 |
|
1,1,1,2-Tetrachloroethane |
70 |
7 |
|
1,1,2,2-Tetrachloroethane |
0.2 |
0.02 |
|
Tetrachloroethylene |
5 |
0.5 |
|
Tetrahydrofuran |
50 |
10 |
|
Thallium |
2 |
0.4 |
|
Toluene |
800 |
160 |
|
Toxaphene |
3 |
0.3 |
|
1,2,4-Trichlorobenzene |
70 |
14 |
|
1,1,1-Trichloroethane |
200 |
40 |
|
1,1,2-Trichloroethane |
5 |
0.5 |
|
Trichloroethylene (TCE) |
5 |
0.5 |
|
2,4,5-Trichlorophenoxy-propionic acid (2,4,5-TP) |
50 |
5 |
|
1,2,3-Trichloropropane |
60 |
12 |
|
Trifluralin |
7.5 |
0.75 |
|
Trimethylbenzenes( 1,2,4- and 1,3,5- combined) |
480 |
96 |
|
Vanadium |
30 |
6 |
|
Vinyl chloride |
0.2 |
0.02 |
|
Xylene5 |
2 mg/l |
0.4 mg/l |
1 Appendix I contains Chemical Abstract Service (CAS) registry numbers, common synonyms and trade names for most substances listed in Table 1.
2 Total chlorinated atrazine residues includes parent compound and the following metabolites of health concern: 2-chloro-4-amino-6-isopropylamino-s-triazine (formerly deethylatrazine), 2-chloro-4-amino-6-ethylamino-s-triazine (formerly deisopropylatrazine) and 2-chloro-4,6-diamino-s-triazine (formerly diaminoa-trazine).
3 "Cyanide, free" refers to the simple cyanides (HCN, CN-) and /or readily dissociable metal-cyanide complexes. Free cyanide is regulatorily equivalent to cyanide quantified by approved analytical methods for "amenable cyanide" or "available cyanide".
4 Dinitrotoluene, Total Residues includes the dinitrotoluene (DNT) isomers: 2,3-DNT, 2,4-DNT, 2,5-DNT, 2,6-DNT, 3,4-DNT and 3,5-DNT.
5 Xylene includes meta-, ortho-, and para-xylene combined.
Note: Consistent with the Department of Health Services' recommendation for the NR 140 ammonia standard, the department will use total ammonia, which is the sum of ionized ammonia and un-ionized ammonia in groundwater, in applying groundwater ammonia standards.
Acronyms in common use for oxanilic acid (for the pesticide metabolites acetochlor oxanilic acid and metolachlor oxanilic acid in Table 1 above) include both "OA" and "OXA."
