Recent stormwater sampling efforts undertaken by Humboldt Waterkeeper and the California Coastkeeper Alliance have found “high concentrations” of pollutants that kill coho salmon in runoff ...

Different stormwater sampling and monitoring equipment are available. For example, automatic samplers may take samples either at fixed time intervals or when certain events happen (e.g., rainfall).

One of the proposed changes to the 2026 MSGP includes stormwater sampling protocols related to Per- and polyfluoroalkyl substances (PFAS) Indicator Monitoring.

The volunteers are part of the Salish Sea Stormwater Monitoring Project, a small nonprofit that monitors stormwater for pollution concentrations in seven cities along the northern Puget Sound.

Recent stormwater sampling efforts undertaken by Humboldt Waterkeeper and the California Coastkeeper Alliance have found “high concentrations” of pollutants that kill coho salmon in runoff ...