Is It Safe to Swim?
How CA Water Boards scientists protect Californians and their dogs by testing for dangerous contaminants in rivers and lakes.
Upcoming Events
Remote Meeting - Information on how to participate in State Water Board meetings remotely
Operator Certification Exams
Strategic Planning
The State Water Board’s Digital Publication, Ebb and Flow
In Focus...
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.
99.8% of these tanks are now closed.
Groundwater Recharge Permits
85% of Californians depend on groundwater for all or part of their water needs.
Faster, lower-cost, 5-year permits allow California to store more water underground for future droughts.
Announcements
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Need Translation or Interpretation Services?
The California Water Boards provides Language Access services in any language at no cost to you.
To request these services, or file a complaint, click on the button below to open the language access form.
The form is available in English, Español (Spanish), Tagalog, 中文 (Simplified Chinese), 한국인 (Korean), Tiếng Việt (Vietnamese), ਪੰਜਾਬੀ (Punjabi).
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Most Visited Program Pages
Drinking Water Treatment & Distribution System Operators
Water Conservation Portal Emergency Regulations
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
Water Conservation Portal Emergency Regulations
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
Visit Our New Student Programs page.
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Employment
Visit Our New Employment Homepage.
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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.
Learn More
