The King County Industrial Waste Program (KCIW) regulates approximately 650 commercial and industrial customers that discharge wastewater into King County’s regional wastewater system. KCIW functions under the County’s Wastewater Treatment Division (WTD) as a delegated industrial waste pretreatment program. KCIW is required to meet the National Pollutant Discharge Elimination System (NPDES) permit requirements for the division’s wastewater treatment plants.
KCIW issues wastewater discharge approvals, conducts inspections, performs sampling, monitors discharges, reviews and approves pretreatment systems, tracks compliance, and takes enforcement actions against facilities that violate requirements to protect workers, local and regional wastewater conveyance systems, the County’s treatment plants, and biosolids quality. KCIW works cooperatively with its customers, provides technical assistance, and presents awards to those that consistently meet pretreatment requirements.