Adopted Drinking Water-Related Regulations and Policy Handbooks
See all regulations and drinking water-related statutes in the Drinking Water Law Book
Recently adopted drinking water regulations and policy handbooks.
Effective in 2024
- Hexavalent Chromium MCL (SWRCB-DDW-21-003) — effective October 1, 2024
- Direct Potable Reuse (SBDDW-23-001) — effective October 1, 2024
- Cross-Connection Control (Policy Handbook) — effective July 1, 2024
Effective in 2023
- Fees for Drinking Water Systems — effective October 19, 2023
- Water Loss Performance Standards— effective April 1, 2023
Effective in 2022
- Fees for Drinking Water Systems — effective November 28, 2022
- Standard Method of Testing and Reporting of Microplastics in Drinking Water (Policy Handbook) — effective September 7, 2022
- No-Regulatory Effect Changes (SWRCB-DDW-21-100B) — effective July 18, 2022
- Reference Corrections (SWRCB-DDW-21-100A) — effective July 12, 2022
Effective in 2021
- Fees for Drinking Water Systems — effective November 1, 2021
- Perchlorate DLR (SBDDW-20-001) — effective July 1, 2021
- Revised Total Coliform Rule (SBDDW-20-002) — effective July 1, 2021
Effective in 2019
- Fees for Drinking Water Systems — effective October 24, 2019
- Point of Use/Point of Entry Treatment Permanent Regulations (SWDDW-17-003) — effective March 22, 2019
Effective in 2018
- Surface Water Augmentation (SWA) Regulations (SBDDW-16-02) — effective October 1, 2018
Effective in 2017
- 1,2,3-Trichloropropane MCL (SBDDW-17-001) — effective December 14, 2017
- Fees for Drinking Water Systems — effective April 10, 2017
Effective in 2016
This regulation was sunset on December 31, 2017
- Point of Use/Point of Entry Treatment Emergency Regulations (PDF) (SBDDW-16-01) — effective April 1, 2016
Effective in 2014
This MCL was removed on September 11, 2017
- Hexavalent Chromium Maximum Contaminant Level (MCL) (DPH-11-005) — effective July 1, 2014. Follow this link for more information about the status of the MCL.
- Groundwater Replenishment Using Recycled Water (DPH-14-003E) — effective June 18, 2014.
Effective in 2013
- Long Term 1 and 2 Enhanced Surface Water Treatment Rules (DPH-09-014) — effective July 1, 2013.
Effective in 2012
- Disinfectant Residual, Disinfection Byproducts, and Disinfection Byproduct Precursors (DPH-09-004) — effective June 21, 2012.
Effective in 2011
- Point of Entry Treatment (DPH-10-011E) — effective September 22, 2011. See Effective in 2016, above.
- Ground Water Rule (DPH-09-007) — effective August 18, 2011.
Effective in 2010
- Point of Use Treatment (DPH-10-009E) — effective December 21, 2010. See Effective in 2016, above
Effective in 2009
- Revision of Safe Drinking Water State Revolving Fund (DPH-06-009) — effective April 2, 2009. Safe Drinking Water Project Funding and its associated regulations have been repealed and replaced by the Drinking Water State Revolving Fund (DWSRF) Policy Handbook. More information about DWSRF is available from the Division of Financial Assistance.
Effective in 2008
- Revision of the Arsenic MCL (DPH-04-017) — effective November 28, 2008.
- WaterWorks Standards (R-14-03) — effective March 9, 2008.
- Interim Enhanced Surface Water Treatment Rule (R-20-01) — effective January 12, 2008.
Effective in 2007
- Primary Maximum Contaminant Level for Perchlorate (R-16-04) — effective October 18, 2007.
Effective in 2006
- Secondary Maximum Contaminant Levels (R-21-03) — effective September 27, 2006.
- Public Notification Requirements for Drinking Water Violations (R-59-01) — effective September 1, 2006.
- Disinfectants and Disinfection Byproducts (R-62-00) — effective June 17, 2006.
- Radionuclide Drinking Water Regulations (R-12-02) — effective June 11, 2006.
More About Regulations
- Upcoming Drinking Water Regulations
- Information for Public Drinking Water Systems
- Drinking Water Lawbook
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Contact Us
State Water Resources Control Board
Division of Drinking Water
Regulatory Development Unit
Mailing Address:
P.O. Box 100
Sacramento, CA 95812-0100
Street Address:
1001 I Street
Sacramento, CA 95814
E-mail us at DDWRegUnit@waterboards.ca.gov.
