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There are simply too many to list here, but some of the most common ones include: Aluminum, Arsenic, Asbestos, Atrazine, Benzene, Chlorides, Chlorine, Copper, Cryptosporidium, Cyanide, Fluoride, Giardia, Lead, Mercury, Nitrates, Radium, Radon, Silver, Sodium, Sulfide, Trichloroethylene, and Total Trihalomethanes.
