Frequently Asked Questions
Below are answers to some of the most frequently asked questions regarding water quality that we receive. If you have other questions about water quality issues, please contact us.
- Where does our water come from?
- Where is our drinking water treated?
- Does the City’s water supply contain fluoride?
- What do you test for in my drinking water, and where can I get those test results?
- What is the hardness of my water?
- Is lead a hazard in our water?
- Does the City test for Cryptosporidium in the water supply? Is there a concern for the general public or for people with compromised immune systems?
- Where does our water come from?
Between 85 and 90% of our drinking water is a blend from the Colorado River and Northern California. About 10 to 15% of the City’s drinking water supply is made up of runoff from local rainfall that is captured in our reservoirs. For more information, see the Water Sources web page.
- Where is our drinking water treated?
