Water Quality

Russian River
One of the most important factors in water quality is the source. Santa Rosa's primary water source is the Russian River, which produces high quality drinking water. Before this water reaches your tap, Santa Rosa and the Sonoma County Water Agency takes many steps to ensure its quality. This includes performing regular testing to ensure your water meets - or exceeds - state and federal standards and carefully managing our water distribution system. Santa Rosa Water provides water testing up to the water meter. Beyond the water meter, the plumbing system belongs to the customer. If you are concerned about your home's private plumbing, you can have your drinking water tested by a private laboratory.

Where Our Water Comes From


Santa Rosa's primary source of water is from the Russian River which is naturally filtered through rock, sand and gravel from wells about 100 feet below the river bed.

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Annual Water Quality Report


Our drinking water routinely meets or exceeds water quality standards set by the Environmental Protection Agency and the State Water Resources Control Board. Every year, pursuant to the Safe Drinking Water Act, Santa Rosa Water publishes a Water Quality Report, which lists regulated constituents found in our drinking water.

Find out more about water quality reporting and to view our Annual Water Quality Report.

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Woman drinking a glass of water.

Lead & Copper Rule


Santa Rosa's drinking water is very low risk for lead contamination. Santa Rosa's water pipes are typically copper or plastic with few older homes having galvanized iron. Lead service lines are not common and all new household plumbing fixtures are required to be lead free.
Additionally, to reduce the risk of corrosion, the pH of your drinking water is adjusted with sodium hydroxide.

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Backflow Prevention


One step the we take to ensure our drinking water is of the highest quality is to require backflow preventers to be installed by consumers who have potential hazards on their property which have a greater chance of polluting or contaminating our water in case of backflow.

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Water pipe in concrete.