Aerial photos of the five treatment plants

Celebrating our award-winning treatment plants

All five of King County’s wastewater treatment plants received 2021 National Association of Clean Water Agency’s (NACWA) Peak Performance Awards, honoring multiple consecutive years of compliance with state and federal effluent permit limits. Special congratulations go to Brightwater for earning its first Platinum award for five years of compliance – and to Vashon for Platinum…

King County South Treatment Plant

Utility of the Future Today & awards for outstanding performance

King County Wastewater Treatment Division (WTD) has received national recognition as a Utility of the Future Today for its beneficial use of Loop® biosolids. WTD is one of 65 water utilities being recognized for transformational work in community engagement, watershed stewardship, and recovery of resources such as water, energy, and nutrients. The Utility of the Future…

Turning Gold into Platinum

Each year NACWA recognizes member agency facilities for their dedication in maintaining compliance of NPDES limits. All of our plants are receiving awards this year, but we’re especially excited to announce that our Vashon Plant has now moved up the ranks from Gold to Platinum. Platinum Awards recognize 100% compliance with permits over a consecutive five-year period.