| http://www.w3.org/ns/prov#value | - Standard 53 certified filters substantially reduce many hazardous contaminants, including heavy metals such as copper, lead and mercury, disinfection byproducts, parasites such as Giardia and Cryptosporidium, pesticides, radon, and volatile organic chemicals such as methyl-tert-butyl ether (MTBE), dichlorobenzene and trichloroethylene (TCE).
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