agents (surfactants)Foaming agents (surfactants) are detergents or detergent-like substances used as cleaning agents in industrial and consumer goods such as personal care products; they are also used as inert ingredients in pesticides.20 ppb20 ppbNo500 ppbNo500 ppbCopperCopper is a naturally occuring metal and drinking water contaminant that enters tap water by corrosion of household plumbing sys