06/26/2026
💧 Ever wonder what’s in your tap water?
The City of Ontario's 2025 Consumer Confidence Report (Annual Water Quality Report) is now available!
This annual report, required by the Safe Drinking Water Act, provides an in depth look at your drinking water, including:
▪️ Where your water comes from
▪️ What's in it
▪️ How it compares to state and federal water quality standards
▪️ The City's ongoing commitment to providing safe, reliable, high quality drinking water
Safe drinking water is essential to public health, fire protection, economic development, and our overall quality of life. As Californians, we can all do our part by using water wisely and protecting this valuable resource.
📖 View the 2025 Annual Water Quality Report at: OntarioCA.Gov