Contact Us


In person: Our customer service facility is located at 437 N. Riverside Ave, Rialto. We’re located just north of the Foothill stop on Omnitrans Route 22. We also have convenient parking available behind the building, near the customer service entrance.

Hours: Mon – Fri , 8:00AM – 5:00PM
By telephone: (909) 820-2546

General correspondence only: Our mailing address is PO Box 800, Rialto, CA  92377.

Payments should be mailed to PO Box 60450, Los Angeles, CA 90060-0450.

Electronically: Fill out the form below.

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.

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!

About The Partners

Rialto Water Services is owned by an affiliate of Ullico, the nation’s first labor-owned financial services company, and Table Rock Capital, and is committed to the long-term success of this groundbreaking arrangement.