Reports Regulations

Seattle must meet state and federal regulatory requirements in order to comply with the Clean Water Act. The program is regulated via National Pollutant Discharge Elimination System (NPDES) permits.

2016-2021 NPDES Combined Sewer System Permit Fact Sheet (pdf)
2016-2021 NPDES Combined Sewer System Permit (pdf)

One requirement in the current permit is to provide realtime online reporting of overflows in Seattle.

Annual reports

2018

2017

2016

2015

2014

2013

2012