Well Standards

DWR Bulletin 74 sets the minimum standards for water, monitoring, cathodic protection, and geothermal heat exchange wells, with the purpose of protecting California’s groundwater quality. Well standards are administered and enforced at the local level. The process, from standards through enforcement, is detailed in Water Code Sections 13800 - 13806.

We are currently updating Bulletin 74. To participate, visit the "Current Effort to Update Bulletin 74" tab below.

We are currently in the process of updating Bulletin 74, California Well Standards, last updated in 1991. Upon completion of the updated Bulletin 74, DWR will submit it to the State Water Resources Control Board for adoption into a Statewide Model Well Ordinance.

We are committed to an open and transparent process that seeks participation and collaborative input from stakeholders and the public.

Attend a Webinar

Bulletin 74 Update Kick-Off Webinars. DWR is hosting two webinars to introduce the Bulletin 74 update project and to solicit input on existing standards. Register here.

Stay Informed

To keep current on Bulletin 74 announcements and updates, join the Bulletin 74 distribution list by signing up here.

Submit Comments

Please visit the Bulletin 74: California Well Standards Comment Portal to provide comment.

For other ways to comment, contact: Bulletin74@water.ca.gov.

The Bulletin 74 series includes the minimum statewide standards for construction, alteration, maintenance, and destruction of water, monitoring, cathodic protection, and geothermal heat exchange wells, as well as several regional standards published in the late 1960s and early 1970s. Though many local jurisdictions have adopted the Bulletin 74 standards directly or by reference, they do have authority to adopt standards that are more stringent in their local well ordinances. Visit Permitting Agencies to determine the requirements in your area.

Related Pages


Julie Haas, Project Manager
Senior Engineer, Water Resources
901 P Street
Sacramento CA 95814