Riverside Public Utilities
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Your Water

Riverside Public Utilities water sources begin as rain and snow that touches down in our local foothills and mountains and flows down through the earth into underground aquifers.

Water Quality

We take our water quality very seriously. That is why we perform more than 22,000 water quality tests from well to tap each year, ensuring our customers receive only water that meets or surpasses all state and federal regulations for drinking water quality.

Water Quality Annual Reports

Each year, by mandate of the State Board of Water Resources and U.S. Environmental Protection Agency, RPU creates the Water Quality Annual Report to inform consumers about their water supplies. In June, the report is published with the previous year’s data and sent to customers with their bills.

Water Quality FAQs

Is my water from Riverside Public Utilities safe?

YES. Riverside Public Utilities water meets or surpasses all State Water Resources Control Board and U.S. Environmental Protection Agency standards for drinking water quality.

Where does RPU’s water come from?

All of RPU’s water comes from groundwater resources in the San Bernardino, Bunker Hill, and Riverside Basins.

Do I need a water filter to make my water drinkable?

NO. RPU’s water has a trace amount of chlorine that helps to purify the water and prevent harmful bacteria and viruses from growing in it. However, if you wish to remove the chlorine from you water, there are carbon filters designed for this purpose.

What helps keep my water safe?

Testing and monitoring. RPU tests for over 200 possible chemical contaminants that may affect our groundwater resources, performing more than 22,000 water quality test per year to ensure that we supply reliable, high quality and safe drinking water.

Who tests Riverside’s water?

RPU’s water sources are rigorously tested by a private laboratory certified by the state which is evaluated annually to ensure its ability to perform the testing.

I have additional questions about water quality. How can I get more information?

Call us. RPU water system representatives can answer your questions at (951) 351-6370, or contact our Customer Call Center at (951) 826-5311.

Water Quality 101

As water travels over the surface of land or through the ground, it dissolves naturally occurring minerals, and in some cases can pick up substances resulting from the presence of animals or human activity.

Water Quality Items in the News

Water is essential to all life on Earth, so when issues about water quality come up, it gets everybody’s attention and consumers begin to question whether their water sources are safe.

More on Water Quality

For detailed results of our recent lead sampling that meets the recommendations by the state, see the 2016 LCR monitoring status. You may also wish to view the USEPA Consumer Information Lead and Copper page.


Water Conservation

Find solutions for drought-related concerns, water-conservation and more.



Get the latest updates on water restrictions.


Explore tips and tools to help you save water.

Water Rebates

Learn how saving water and energy helps save money.


Facts about California's Water Efficient Landscape Ordinance.

Drought Alerts

Sign up to for drought alerts and be the first to know when to save water.


Get answers to drought-related frequently asked questions.


Water: What You Pay For

Find out about the water service a typical residential water bill covers, and the costs of delivering a consistent, reliable flow of safe and affordable drinking water to your faucet.