what clean water regulation do you think has had the greatest impact on water quality in the united states? in a 3-5 sentences, explain and justify your opinion

This would be the Waste Water Treatment act of 1972.  This ensured that sewage was treated and not released into bodies of water which would eventually end up in our drinking water.

Explanation:

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

i dont know it at allnow im just getting points at this pint