Archive Page


Lead and Copper Rule | Drinking Water Requirements …


Lead and copper enter drinking water primarily through plumbing materials. Exposure to lead and copper may cause health problems ranging from stomach distress to brain damage. In 1991, EPA published a regulation to control lead and copper in drinking water. This regulation is known as the Lead and ...


More Reading

12.3 Primary Copper Smelting


12.3 Primary Copper Smelting ... Copper is produced in the U. S. primarily by pyrometallurgical smelting methods. ... concentration, roasting, smelting, ...


More Reading