Read this US policy on clean water.The Clean Water Act (CWA) establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface water. – "Summary of the Clean Water Act,” Environmental Protection Agency
Answer
A
to report the number of cases of people who have cholera symptoms
B
to provide health guidelines about effects from waterborne diseases
C
to enforce standards that focus on chemical discharge into bodies of water
D
to carry out research that investigates how dirty water affects human health