City of Everett - Water Pollution Control Facility

We invite public comment on the modification of Permit No. WA0024490 for the City of Everett Water Pollution Control Facility. The proposed permit modification adds new conditions necessary to regulate the discharge of nutrients from the Everett Water Pollution Control Facility. The modification also changes the due date for the first submittal that documents seasonal Outfall 015 flow reduction efforts.

We extended the ending of the public comment period from July 10, 2026 to Aug.10, 2026.

You can view the draft modification, fact sheet addendum, and other permit documents at Everett WPCF or visit the Water Quality Permitting and Reporting Information System (PARIS) website.

To comment or request a public hearing, use one of the ways listed below. 

We will schedule a public hearing on the proposed permit changes if we determine that there is significant public interest. To request a public hearing, please contact nwrowqpermits@ecy.wa.gov by Aug. 10, 2026, and include the permit number and your reason for requesting the hearing.

Background

We regulate wastewater released from municipalities and industries using the National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit. This permit regulates wastewater that goes directly into Puget Sound. All wastewater must be treated and meet the applicable water quality standards before it goes into surface water to protect human health and aquatic life. Learn more about water quality individual permits.

Discharges of excess nutrients — particularly nitrogen — to Puget Sound from domestic wastewater treatment facilities are contributing to low oxygen levels. The proposed requirements are intended to maximize what the existing treatment facilities can reasonably do to reduce nutrients, with their existing technology. Facilities will also begin planning for upgrades needed to improve nutrient removal in the future. The updates are focused on four concepts:

• Monitoring the current nitrogen levels in the facilities’ discharge water
• Evaluating annual nitrogen loads and requiring corrective actions if they are too high
• Incorporating nutrient reduction into regular operations and maintenance
• Assessing nutrient reduction technologies in two ways:
  • Identifying what treatment changes the community can reasonably afford (called the AKART analysis; AKART stands for all known, available and reasonable methods of prevention, control and treatment). This analysis focuses on identifying the best level of treatment the community can afford to build and operate.
  • What it would take to change the existing treatment systems to achieve a specified low-level nitrogen target (called the Nutrient Reduction Evaluation).