%0 Journal Article %J Federal Register %D 1998 %T National Recommended Water Quality Criteria %A US EPA %B Federal Register %V 63 %P 68354-68364 %0 Report %D 1984 %T Ambient Water Quality Criteria for copper %A US EPA %I Environmental Protection Agency %C Washington, DC %G eng %0 Report %D 1978 %T In depth studies on the health and environmental impacts of selected water pollutants %A US EPA %I United States Environment Protection Agency %G eng