We are a family owned and operated business.

Licensed, Bonded, and Insured.

We specialize in Backflow Prevention Assembly Testing, Repair, and New Installation.

Residential, Commercial, and Industrial Services

Over 7 years in experience with water utilities.

Cal-Oso Backflow Services takes great pride in serving Riverside, San Diego and San Bernardino Counties.

Ready To Service Your Backflow?

Contact Us For A Free Quote