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Storm Water Program
Storm water is defined by US EPA as the runoff generated when precipitation from rain and snowmelt events flows over land or impervious surfaces without percolating into the ground. Storm water is often considered a nuisance because it mobilizes pollutants such as motor oil and trash. In most cases, storm water flows directly to water bodies through sewer systems, contributing a major source of pollution to rivers, lakes, and the ocean. Storm water discharges in California are regulated through National Pollutant Discharge Elimination System (NPDES) permits. However, storm water may also act as a resource and recharge to groundwater when properly managed. The Water Boards are actively involved in initiatives to improve the management of storm water as a resource. For more information read our Storm Water Management Fact Sheet
- None at this time.
Storm Water Permitting
The Federal Clean Water Act (Clean Water Act) prohibits certain discharges of storm water containing pollutants except in compliance with a National Pollutant Discharge Elimination System (NPDES) permit. The NPDES stormwater program regulates some stormwater discharges from three potential sources: municipal separate storm sewer systems (MS4s), construction activities, and industrial activities.
View our Storm Water Permitting Program Pages:
Storm Water Planning
- STORMS - Strategy to Optimize Resource Management of Storm Water
- Storm Water Strategy Fact Sheet
STORMS' mission is to lead the evolution of storm water management in California by advancing the perspective that storm water is a valuable resource, supporting policies for collaborative watershed-level storm water management and pollution prevention, removing obstacles to funding, developing resources, and integrating regulatory and non-regulatory interests.
View our Storm Water Planning Program page:
Storm Water Funding
- Storm Water Grant Program (SWGP)
The mission of the Storm Water Grant Program is to promote the beneficial use of storm water and dry weather runoff in California by providing financial assistance to eligible applicants for projects that provide multiple benefits while improving water quality.
View our Storm Water Grant Program page:
Storm Water Initiatives
- Storm Water Films Page
- Plastic Debris Page
- Keeping California Water Clean - Addressing Storm Water (Video)
The Water Boards are working toward innovative storm water quality solutions including incorporation of low impact development objectives, green chemistry pollutant control, and education outreach through films.
To sign up for Storm Water Industrial Permit updates email subscription list please use the link below, then select "Water Quality" and check the box for "Storm Water Industrial Permitting Issues", type in your name and email and click subscribe.
Receive email updates on Storm Water program Subscribe online to our electronic mailing lists.
General Storm Water Questions:
Phone: 1-866-563-3107 (Monday - Friday from 8:00 AM-5:00 PM)