Skip to main content
U.S. flag

An official website of the United States government

i19 Stormwater Permitees Municipal

Published by California Department of Water Resources | State of California | Catalog Last Checked: July 28, 2025 at 07:10 PM | Dataset Last Updated: May 29, 2025 at 04:07 PM
The feature datasets contain Phase 1 and Phase 2 municipal separate stormwater sewer system (MS4s) permittees in California. These draft layers are based on 2010 census data and they have not been updated since 2013 and there are no current plans to include them as a SWRCB web service. Most of the Phase 1 permittees encompass an entire metropolitan area. The Municipal Storm Water Program manages the Phase I Permit Program (serving municipalities over 100,000 people), the Phase II Permit Program (for municipalities less than 100,000), and the Statewide Storm Water Permit for the State of California Department of Transportation. The State Water Resources Control Board (State Water Board) and Regional Water Quality Control Boards (collectively, the Water Boards) implement and enforce the Municipal Storm Water Program.

Resources

6 resources available

Find Related Datasets

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov