Water treatment plants produce water for drinking and 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.
We have developed the Water Treatment Plant General Permit (WTPGP) to help treatment facilities comply with state laws and the federal Water Pollution Control Act. This permit contains specific requirements and conditions for permittees to protect rivers and other waterbodies that receive wastewater discharges.
You need a general permit if the water treatment plant discharges backwash to surface waters and:
If any of these are the case, you may need an individual permit.