... Prevention DivisionOffice of Pollution Prevention and ToxicsOffice of Pollution Prevention and ToxicsOffice of Prevention, Pesticides, and Toxic SubstancesU.S. Environmental Protection AgencyWashington, ... solids,biochemical oxygen demand (BOD,), color, and toxics.1Conventional pollution abatement in the U.S.has concentrated on reducing solids, oxygen demand, and aquatic toxicity. Color has ... BOD5, TSS, and pH, and for the priority pollutants zinc, pentachlorophenol, and trichlorophenol.2 State water criteria and standards have addressed color in some localities, and these requirementswill...