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Community Water Systems
Regulated Contaminants and Maximum Levels
Community Water Systems are the most highly regulated category within Public Water System types. These systems provide household water to the same individuals and families every day, thereby exposing users to the greatest potential for harm from long-term exposure. Neilson Research Corporation provides routine monitoring for cities, towns, subdivisions, and mobile home parks to meet these stringent testing requirements. Our staff provides unquestionable data to satisfy regulatory authorities under the Safe Drinking Water Act.
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Community Water System Regulated Contaminants and Maximum Levels |
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Inorganics |
mg/L |
Synthetic Organics |
mg/l |
|
Antimony Total |
0.006 |
2,4-D |
0.07 |
|
Arsenic |
0.010 |
2,4,5-TP (Silvex) |
0.05 |
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Asbestos (million fibers/liter) |
7 MFL |
Adipates Di(2-ethylhexy) |
0.4 |
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Barium |
2 |
Alachlor (Lasso) |
0.002 |
|
Beryllium Total |
0.004 |
Atrazine |
0.003 |
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Cadmium |
0.005 |
Benzo(A)Pyrene (PAH’s) |
0.0002 |
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Chromium |
0.1 |
BHC-gamma (Lindane) |
0.0002 |
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Cyanide |
0.2 |
Carbofuran |
0.04 |
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Fluoride |
4.0 |
Chlordane |
0.002 |
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Mercury |
0.002 |
Dalapon |
0.2 |
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Nickel |
0.1 |
Dibromochloropropane (DBCP) |
0.0002 |
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Nitrate |
10 |
Dinoseb |
0.007 |
|
Nitrate-Nitrite |
10 |
Dioxin (2,3,7,8-TCDD) |
3x10-8 |
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Nitrite |
1 |
Diquat |
0.02 |
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Selenium |
0.05 |
Endothall |
0.1 |
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Sodium (advisory level) |
20 |
Endrin |
0.002 |
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Thallium Total |
0.002 |
Ethylene Dibromide (EDB) |
0.00005 |
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Glyphosate |
0.7 |
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Lead and Copper |
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Heptachlor Epoxide |
0.0002 |
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Lead (action level) |
0.015 |
Heptachlor |
0.0004 |
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Copper (action level) |
1.3 |
Hexachlorobenzene (HCB) |
0.001 |
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Hexachlorocyclopentadiene (HEX) |
0.05 |
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Volatile Organics |
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Methoxychlor |
0.04 |
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1,1-Dichloroethylene |
0.007 |
Pentachlorophenol |
0.001 |
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1,1,1-Trichloroethane |
0.2 |
Phthalates Di(2-ethylhexy) (DEHP) |
0.006 |
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1,1,2-Trichloroethane |
0.005 |
Picloram |
0.5 |
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1,2-Dichloropropane |
0.005 |
Polychlorinated Biphenyls (PCB) |
0.0005 |
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1,2-Dichloroethane |
0.005 |
Simazine |
0.004 |
|
1,2,4-Trichlorobenzene |
0.07 |
Toxaphene |
0.003 |
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Benzene |
0.005 |
Vydate (Oxamy) |
0.2 |
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Carbon Tetrachloride |
0.005 |
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Cis-1,2-Dichloroethylene |
0.07 |
Disinfection Byproducts |
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Dichloromethane |
0.005 |
Total Trihalomethanes (TTHM’s) |
0.080 |
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Ethylbenzene |
0.7 |
Chloroform |
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Monochlorobenzene |
0.1 |
Bromodichloromethane |
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O-Dichlorobenzene |
0.6 |
Dibromochloromethane |
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P-Dichlorobenzene |
0.075 |
Bromoform |
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Styrene |
0.1 |
Total Haloacetic Acids (HAA5’s) |
0.060 |
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Tetrachloroethylene (PCE) |
0.005 |
Monochloroacetic acid |
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Toluene |
1.0 |
Dichloroacetic acid |
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Total Xylenes |
10.0 |
Trichloroacetic acid |
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Trans-1,2-Dichloroethylene |
0.1 |
Monobromoacetic acid |
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Trichloroethylene (TCE) |
0.005 |
Dibromoacetic acid |
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Vinyl Chloride |
0.002 |
Chlorite |
1.0 |
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Bromate |
0.01 |
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Radionuclides |
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Gross alpha particles |
15 pCi/L |
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Combined radium 226/228 |
5 pCi/L |
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Uranium |
0.03 |
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Beta/photon emitters |
4 Mrem/yr |
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