| http://www.w3.org/ns/prov#value | - m is a naturally occurring element that contaminates water due to mining or petrolum refining, fly-ash from coal-burning power plants, and irrigation of arid farmland soils high in selenium.1.1 ppb2.2 ppbNo50 ppbNo50 ppbDibromoacetic acidDibromoacetic acid is a disinfection byproduct regulated by EPA as one of five h
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