Water Use Rules in Ontario, CA (2026)
1 verified water use rules for Ontario, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Recycled Water Rules
Ontario requires a signed use agreement and City approval before any property can receive recycled water, restricting it to State Water Board approved uses like irrigation and toilet flushing. Purple-coded pipes, backflow protection, and cross-connection testing are mandatory under Municipal Code Chapter 8C.
Ontario Recycled Water Use Rules
Some RestrictionsOntario Municipal Code § 6-8.712(a) (Authorized Uses)
(a) Uses of recycled water include only those uses approved by the State Board and consistent with the Uniform Statewide Recycling Criteria under Title 22 of the California Code of Regulations. Each proposed use will be considered for approval by the City on a case-by-case basis, and the City may determine in its discretion whether it is feasible to furnish recycled water for the proposed use.
Looking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Ontario city rules.
Water Use Rules in San Bernardino County →