2021 Stormwater Pollution Prevention Manual
King County, Washington
The 2021 Stormwater Pollution Prevention Manual (SPPM) provides best management practices (BMP's) for managing stormwater on commercial, multi-family and residential properties. The manual provides detailed information for businesses, residents, managers, and owners of property in unincorporated King County, and describes the actions we are all required to take to reduce the contamination of stormwater, surface water, and groundwater, to comply with Federal Clean Water Act requirements.
2021 SPPM - Full Document (1.9 MB)
Information Sheets with more detailed information on specific pollution prevention practices called out in the BMP Activity Sheets