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Line 45: ====Water pollution==== [[File:Nashville teachers graduate STEM curriculum with Corps externships (9203468499).jpg\|thumb\|Ambient water sample collection on a lake in [[Nashville, Tennessee]]]] Enactment of the 1972 [[Clean Water Act]] (CWA) required thousands of facilities to obtain permits for discharges to [[navigable]] waters, through the [[Clean Water Act#NPDES permits for point sources\|National Pollutant Discharge Elimination System (NPDES)]]. It also required EPA to establish national technology-based discharge standards for municipal [[sewage treatment]] plants, and for many industrial categories (the latter are called "[[effluent guidelines]].")<ref name="US CWA 1972">United States. Federal Water Pollution Control Amendments of 1972, {{USPL\|92\|500}}, {{USC\|33\|1251}} ''et seq.'' October 18, 1972.</ref>

Regulation and monitoring of pollution: Difference between revisions