Water treatment plants produce water for drinking and for industrial businesses. The Washington State Department of Health assures drinking water is safe and reliable. Our role ensures that the water treatment byproducts released from these plants do not harm the environment.
Treatment can involve:
The current permit went into effect Sept. 1, 2014, and expires on Aug. 31, 2019.
You need this general permit if your water treatment plant discharges wastewater to surface waters and:
If any of these are the case, you may need an individual permit.