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Safe Drinking Water


Drought State of Emergency

With California facing water shortfalls in the driest year in recorded state history, Governor Edmund G. Brown Jr. proclaimed a State of Emergency on January 17, 2014 and directed state officials to take all necessary actions to prepare for these drought conditions. DEHS is compiling a resource list for both water system operators and the public to help save water and respond appropriately. This resource list can be found on our Environmental Health Emergencies page.

Drinking Water Systems

The Division of Environmental Health Services (DEHS) Small Drinking Water System Program protects public health and safety by inspecting water systems to ensure pure and safe drinking water is supplied throughout San Bernardino County. In partnership with small drinking water systems owners/operators in our County, DEHS conducts routine inspections to prevent waterborne diseases, identify risks of bacteriological, chemical and/or radiological contamination, and provide technical assistance. DEHS has an agreement with the California Department of Public Health, Drinking Water Program (State Water Board) for administration and enforcement of the Federal and State statutes and regulations for any water systems under 200 service connections. Currently, there are 272 small drinking water systems.

Drinking Water System Information

No Cost Program by the Mojave Water Agency and CRWA for Small Water Systems Within the MWA Service Area

Approved Water Testing Labs

High Nitrates in Water Systems

New Chromium-6 Drinking Water Maximum Contaminate Level

Additional Chromium-6 Information

US EPA Water on Tap – What You Need to Know


Disinfection Byproducts Rule (DBPR) Monitoring Plan Template

Disinfection Log Template

Surface Water Treatment Operations Plan Template

Disinfection Byproducts Rule (DBPR) Quarterly Monitoring Form Template

Disinfection Byproducts Rule (DBPR) Overview

Consumer Confidence Reports

Visit the Water Board website to see files that will assist small water systems in completing the required notification to small water system customers and water users.

State Water Board CCR Guidance and Templates

Water Wells

DEHS is using a grant to take domestic well water samples for known or suspected contaminants for our voluntary Domestic Well Water Sample Program (DWWS). Our goal is to identify contaminants of concern and to notify the property owner of the results so they may be properly informed regarding their well water. Sampling and test results are provided free of charge. To take part in this program, please fill out the Water Sampling Form. If you have questions regarding sample results, please visit or click on a specific concern on this page.

A Guide for Private Domestic Well Owners

How to Properly Abate Abandoned Water Wells

How to Store Water

List of Best Available Technologies (BAT)

Minimum Setbacks list
Minimum Requirements for Location of Liquid Waste Disposal Systems

Minimum Setbacks for Subdivisions

Safe Handling of Drinking Water, Ice and Dispensers at Golf Courses

Substantiated Water Well Documents

Typical Individual Well
Requirements and diagrams of surface slab detail and pump installation detail for a typical well

Well Drillers License Verification

Water Trivia/Helpful Hints to Conserve Water

Water Well Sharing Guidelines

Well Drillers



Chromium 6

Gross Alpha or Uranium




Cross Contamination and Backflow Prevention

The County of San Bernardino requires that domestic water systems within this jurisdiction are protected against contamination or pollution as a result of inadequate protection due to the lack of or malfunctioning of backflow prevention assemblies. In addition, State regulated water purveyors are also required to monitor backflow prevention devices to meet the California Code of Regulations, Title 17 requirements.

A Certificate of Competence issued by DEHS is required to inspect, maintain, or test water back flow prevention assemblies. All new registrants must successfully pass a written exam before sitting for the practical exam. All certificate holders who wish to renew must demonstrate competence at the practical exam. Candidates who are successful will receive a certificate. DEHS offers the option of being placed on our commercial testers list that is published below and solicited by water purveyors. DEHS currently offers four testing dates per year; typically in March, June, September and December.

For more information on the backflow program or to find out about upcoming backflow certification test dates, please contact DEHS at 1-800-442-2283.

Commercial Backflow Testers

Backflow Testing Information - March 2015

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