Bengston

Domestic Wastewater Treatment: EPA Overview - 3 PDH

The 1972 legislation known as the Clean Water Act set secondary treatment as the required level of treatment to be provided by domestic wastewater treatment plants in the United States. In this course you can learn about the basic processes used in …

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Our PDH is currently accepted in: AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MA, MI, MN, MS, MO, MT, NE, NV, NH, NM, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY