Resources for the residents, teachers and students of Marin County.
Information and best practices for individuals engaged in construction projects.
Permit, best practices, and information for planning projects with new and redevelopment post construction stormwater treatment facilities
A listing of best management practices for Marin County businesses including horse boarding facilities and ownership.
Learn more about how you can protect Marin’s creeks and watersheds.
Marin County Stormwater Pollution Prevention Program, MCSTOPPP, is a joint effort of Marin's cities, towns and the County. For more about MCSTOPPP...
If you wish to report an illegal discharge into a storm drain, creek, bay or ocean, please complete this form or reach out to your local stormwater contact.
If you have a question, comment or complaint, please drop us an email and we'll respond as quickly as possible.