Skip to main content

2022 annual report

Read the 2022 annual report (7MB)

In 2022, violations by KCIW-regulated companies and facilities did not cause problems at King County’s wastewater treatment plants. Specifically, there were no NPDES exceptions for effluent discharges into Puget Sound at any of the plants attributed to an industrial facility. Additionally, metal concentrations in biosolids continued to meet the strictest U.S. Environmental Protection Agency standards. Despite the challenges of operating during the pandemic, KCIW had a very productive year.

The following are highlights of KCIW activities in 2022:

  • Issued 205 wastewater discharge approvals (new, renewed, and revised control documents, including letters of authorization, minor and major discharge authorizations, and waste discharge permits).
  • Inspected and sampled all significant industrial users to meet the federal pretreatment requirement of once per year.
  • Issued enforcement actions against those that violated requirements, including major actions involving significant noncompliance.
  • Initiated a new project to replace KCIW’s existing Pretreatment Information Management System database.
  • Fulfilled all our delegated pretreatment responsibilities while having reduced staffing levels.

What is the King County Industrial Waste Program

The King County Industrial Waste Program (KCIW) is a delegated pretreatment program that regulates businesses and industries that discharge wastewater to the sanitary sewer system in order to protect workers, local and regional sewer and treatment infrastructure, effluent quality and biosolids.

KCIW issues wastewater discharge approvals, conducts inspections, performs sampling, tracks compliance, and takes enforcement actions against facilities that violate requirements. We provide technical assistance and offer environmental compliance awards for companies that consistently meet requirements.

Learn more about the King County Industrial Waste Program