Water Quality Information


Rialto Water Services is proud to inform residents that the Water Division has passed another annual Water Quality Checkup. The utility’s water has met all the Clean Water Standards set forth by the State and Federal Governments in 2004.

Our annual drinking water report, also known as the Consumer Confidence Report (CCR) is available for download. The purpose of this report is to provide you information about the quality of the water we delivered to you during 2020.

This report is mandated by the law, but we believe it is your right to know where your water comes from and what it contains. We are happy to report that we have consistently delivered water that has met or performed better than the standards set by State and Federal Law.

More information about contaminants and potential health effects can be obtained by calling the USEPA’s (United States Environmental Protection Agency) Safe Drinking Water Hotline at 1 (800) 426-4791.



To ensure the ongoing safety and quality of the water resource, neighboring local public agency West Valley Water District is in direct partnership with the City of Rialto to lead all perchlorate remediation activities.

It is important to know that Rialto Water Services does not pump water into its system that contained detectable levels of the Perchlorate contaminate. We currently have wellhead treatment on two of our wells for the removal of perchlorate.

This wellhead treatment removes the perchlorate to a Non-Detection Level. The other two wells affected by perchlorate contamination have been shut down, are out of service and have not been used since detection occurred. These wells are targeted for wellhead treatment in the near future.

Concession Agreement

In 2012, the City of Rialto agreed to a 30-year concession agreement to accelerate delivery of much-needed capital improvement projects and turn over management the water systems to Veolia North America.

Generation S.T.E.M.

Our team doesn’t just lecture – rather, provides hands-on experiences for students through a variety of programming designed to educate and inspire. Maybe your child or student is one of this country’s next water and wastewater professionals!

Customer Service

The mission of Rialto Water Services is to provide quality water and wastewater treatment to City residents. Visit our Customer Service page to Pay Your Bill, Start New Service, or learn more about our Service Line Protection Program.