Hide Alert

Welcome to our new website. Learn more about what's new.

Stormwater Action Monitoring — source identification

SAM's source control studies are focused on learning which actions by permittees and businesses in Western Washington are key to preventing illicit discharges. We are also gaining a better understanding of how to detect sources of pollution to stormwater. 
Source identification logo with a water outfall pipe

What are we learning?

Stormwater Action Monitoring (SAM) completed one source identification study during the 2013-2018 permit cycle and three more projects are under contract development. SAM source identification projects results can be used across jurisdictions. 

Completed SAM source identification studies

Illict Discharge, Detection, and Elimination Compilation

SAM source identification projects

The following projects are now underway. The third project below is currently planned to start in late 2019.