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 how can the clean water act best promote health? check all that apply. -by monitoring a toxic spill that affects a drinking water supply -by enforcing standards that protect lakes used for swimming -by providing health pamphlets related to drinking water quality -by carrying out research about health effects from large discharges -by controlling the amount of discharge released into a town’s water well