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.

 

Community Water System Regulated Contaminants and Maximum Levels

 
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
Asbestos (million fibers/liter) 7 MFL Adipates Di(2-ethylhexy) 0.4
Barium 2 Alachlor (Lasso) 0.002
Beryllium Total 0.004 Atrazine 0.003
Cadmium 0.005 Benzo(A)Pyrene (PAH’s) 0.0002
Chromium 0.1 BHC-gamma (Lindane) 0.0002
Cyanide 0.2 Carbofuran 0.04
Fluoride 4.0 Chlordane 0.002
Mercury 0.002 Dalapon 0.2
Nickel 0.1 Dibromochloropropane (DBCP) 0.0002
Nitrate 10 Dinoseb 0.007
Nitrate-Nitrite 10 Dioxin (2,3,7,8-TCDD) 3×10-8
Nitrite 1 Diquat 0.02
Selenium 0.05 Endothall 0.1
Sodium (advisory level) 20 Endrin 0.002
Thallium Total 0.002 Ethylene Dibromide (EDB) 0.00005
Glyphosate 0.7
Lead and Copper Heptachlor Epoxide 0.0002
Lead (action level) 0.015 Heptachlor 0.0004
Copper (action level) 1.3 Hexachlorobenzene (HCB) 0.001
Hexachlorocyclopentadiene (HEX) 0.05
Volatile Organics Methoxychlor 0.04
1,1-Dichloroethylene 0.007 Pentachlorophenol 0.001
1,1,1-Trichloroethane 0.2 Phthalates Di(2-ethylhexy) (DEHP) 0.006
1,1,2-Trichloroethane 0.005 Picloram 0.5
1,2-Dichloropropane 0.005 Polychlorinated Biphenyls (PCB) 0.0005
1,2-Dichloroethane 0.005 Simazine 0.004
1,2,4-Trichlorobenzene 0.07 Toxaphene 0.003
Benzene 0.005 Vydate (Oxamy) 0.2
Carbon Tetrachloride 0.005
Cis-1,2-Dichloroethylene 0.07 Disinfection Byproducts
Dichloromethane 0.005 Total Trihalomethanes (TTHM’s) 0.080
Ethylbenzene 0.7      Chloroform
Monochlorobenzene 0.1      Bromodichloromethane
O-Dichlorobenzene 0.6      Dibromochloromethane
P-Dichlorobenzene 0.075      Bromoform
Styrene 0.1 Total Haloacetic Acids (HAA5’s) 0.060
Tetrachloroethylene (PCE) 0.005      Monochloroacetic acid
Toluene 1.0      Dichloroacetic acid
Total Xylenes 10.0      Trichloroacetic acid
Trans-1,2-Dichloroethylene 0.1      Monobromoacetic acid
Trichloroethylene (TCE) 0.005      Dibromoacetic acid
Vinyl Chloride 0.002 Chlorite 1.0
Bromate 0.01
Radionuclides
Gross alpha particles 15 pCi/L
Combined radium 226/228 5 pCi/L
Uranium 0.03
Beta/photon emitters 4 Mrem/yr