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Public Utilities

Water Quality

Two kids at a drinking fountainIn the more than 100 years the City of San Diego has been delivering water to its citizens, we have never sold a drop of water deemed unsafe by any local, state or federal agency. That's a record we are proud of and one we're determined to continue.

Water Quality Reports

The City of San Diego's annual Drinking Water Quality Report, also known as the Consumer Confidence Report, is a state-mandated document that provides information on the drinking water that is delivered to you daily and how it compares to state standards.

Water Quality in Your Home or Business

The Public Utilities Department conducts regular water sampling and quality testing throughout the distribution system to ensure the water that is delivered to your home or business is safe.


Protecting water sources is vital to providing healthy and safe drinking water to all of our customers. We have a commitment to environmental protection because our watersheds and reservoirs have multiple uses, such as drinking water, irrigation, recreation and wildlife habitat.

Public Health Goals

Provisions of the California Health and Safety Code specify that the Public Utilities Department and other water utilities with more than 10,000 service connections prepare a special report by July 1, 2019, if their water quality measurements exceeded any Public Health Goal in calendar years 2016, 2017 and 2018.

Water Hardness

Typically, drinking water in San Diego averages about 16 grains per gallon (gr/gal) or 276 parts per million (ppm), and depending upon water demand and the area of the City you live can range from 16 to 18 gr/gal or 272 to 284 ppm. More details are available in the annual Drinking Water Quality Reports.

Protect Yourself from Scams and Imposters

Occasionally there are reports of people posing as water utility personnel who try to sell water treatment devices, inspect home plumbing or collect payment for water bills. Learn how to help protect yourself.


If you have questions or concerns about the quality of your water, please contact the City's Water Quality Lab at 619-668-3232 or