What is the fluoride level of Rancho's water?

Rancho Water does not add fluoride to its water; however, fluoride occurs naturally in Rancho’s groundwater. Our local water supplies are “blended” with water imported from the Metropolitan Water District of Southern California (MWD). Rancho’s range is 0.7 - 1.3 milligrams per liter (mg/L). The maximum allowable level of fluoride at the state level is 2.0 mg/L.

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1. What is the fluoride level of Rancho's water?
2. Do Temecula and Murrieta have hard or soft water?
3. What about water softeners?
4. Who regulates drinking water quality?