California's progress removing single-walled storage tanks
Leaking fuel and hazardous waste can pollute our water systems. Single-walled storage tanks must close by January 1, 2026.
99% of these tanks are now closed.
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Drinking Water Programs
Wastewater Operator Certification Program
State and Regional Water Boards Map
Public Water Systems Operator Certification Program
Water Quality Programs
Board Meeting Information and Calendar
Board Meeting Information Videos
Environmental Laboratory Accreditation Program (ELAP)
Industrial Stormwater Program
Storm Water Industrial Classification Codes (SIC)
Storm Water Program
Industrial General Permit 2014-0057-DWQ
SMARTS - Industrial Help Guides
Information for Public Drinking Water Systems
Search Beach Monitoring Data
Contact Us
Per- and Polyfluoroalkyl Substances (PFAS)
Water Rights Programs
California Drinking Water Related Laws
Featured Topics
Student Programs
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Employment
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Cannabis Cultivation
The State Water Board is developing and implementing new regulatory programs to address potential water quality and quantity issues related to cannabis cultivation.
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