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Regulatory Handbook -> Water Quality Permits -> State Wastewater Discharge Permit

State Wastewater Discharge Permit

What is the Purpose of this Permit?
State waste discharge permits either prevent pollution of groundwater or prevent the upset of wastewater treatment systems by limiting the discharge of pollutants.
  • Facilities that discharge wastewater pollutants to land must apply for a State Wastewater Discharge Permit to Discharge Industrial Wastewater to Ground Water by Land Treatment or Application.
  • Industrial facilities that discharge wastewater to privately or publicly-owned wastewater treatment plants must obtain a State Wastewater Discharge Permit to Discharge Industrial Wastewater to a Publicly-Owned Works (POTW) unless it has obtained a pretreatment discharge permit issued by a delegated municipality.
See the ORIA Regulatory Handbook pages for those permits for more details.
Who Issues this Permit?
Department of Ecology
Statewide Contact:
Department of Ecology
Water Quality Program
Headquarters
300 Desmond Drive
PO Box 47600
Olympia, WA 98504-7600
Fax: (360) 407-6426
Telephone: (360) 407-6600
Website: https://ecology.wa.gov/About-us/Get-to-know-us/Our-Programs/Water-Quality
* Permit information last updated 7/25/2016
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