arsenic, contaminant, tritium, groundwater, tetrachlorethylene, nitrate, carbon tetrachloride, chromium, ppb, dioxane, vinyl chloride, fluoride, bromate, benzene, acrylamide, contamination, radium, toxaphene, phosphorus, chlordane, carcinogen, chloramine, cadmium, mercury, rfd, pollutants, coliform, chlorpyrifos, coliform bacteria, methylmercury, dioxin, orthophosphate, atrazine, dieldrin, selenium, heptachlor, furan, iodine, hydrazine, cyanuric acid, chlorine, chloride, polychlorinated biphenyl, hazardous waste, nitrobenzene, exceedance, aquifer, trichloroethane, cesium, lindane, ozone, pesticide, dental amalgam, melamine, phosphorous, radioactivity, iodide, barium, pentachlorophenol, sodium, wastewater, oxidizer, polychlorinated, superfund site, perc, sulfate, toxins, methyl chloride, radon, hydrofluoric acid, turbidity, sodium benzoate, phthalate, tetrachloroethylene, radioactive waste, oxalates, chemicals, nitrogen, simazine, microgram, americium, domoic acid, leachate, strontium, ammonia, sodium dichromate, sodium fluoride, radiation, magnesium hydroxide, trichloroethylene, chlorination, organochlorine, neurotoxin, deca, effluent, manganese, urate, hydrogen sulfide, toxicity, radioactive, methylene chloride, biphenyl, sulphate, carbonate, chromate, hydroxide, cyanide, hydrate, acetate, chlorid, citrate, oxalate, sulphide, sulphite, silicate, borate, bromide, nitrite, peroxide, sulfide, sulfite, salicylate, acid, citric, formate, hydrochloric, oxalic

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