La Verne, California Tap Water Quality Report
Serving utility: Metropolitan Water District of So. Cal.
Updated March 2026 • Data from EWG Tap Water Database & EPA SDWIS
Notable Concerns
La Verne tap water has 5 contaminants exceeding EWG health guidelines, including Arsenic, Uranium, Nitrate. Additionally, 4 known or suspected carcinogens were detected, including Arsenic, Uranium, Nitrate.
Water Provider Information
Contaminants Detected
| Contaminant | Detected Level | EWG Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Arsenic carcinogen | 0.16 ppb | 0.00 ppb | 10 ppb | Above guideline |
| Uranium carcinogen | 1.33 pCi/L | 0.43 pCi/L | 20 pCi/L | Above guideline |
| Nitrate carcinogen | 0.28 ppm | 0.14 ppm | 10 ppm | Above guideline |
| Nitrate and nitrite carcinogen | 0.29 ppm | 0.14 ppm | 10 ppm | Above guideline |
| Radium, combined (-226 and -228) | 0.07 pCi/L | 0.05 pCi/L | 5 pCi/L | Above guideline |
| Aluminum | 77.50 ppb | 600 ppb | No legal limit | Below guideline |
| Barium | 36.70 ppb | 700 ppb | 2,000 ppb | Below guideline |
| Fluoride | 0.71 ppm | N/A | 4 ppm | Below guideline |
| Manganese | 0.73 ppb | 100 ppb | No legal limit | Below guideline |
| Vanadium | 0.76 ppb | 21 ppb | No legal limit | Below guideline |
Health Context
Arsenic carcinogen
Long-term exposure increases risk of skin cancer, bladder cancer, and lung cancer; chronic exposure causes neurological effects and cardiovascular disease.
Uranium carcinogen
Uranium is a radiotoxic heavy metal that accumulates in bones and kidneys, causing chronic kidney damage and increasing cancer risk with prolonged exposure above EPA limits (30 µg/L).
Nitrate carcinogen
Nitrate is converted to nitrite in the body, which can interfere with oxygen transport in blood. Chronic exposure is linked to increased cancer risk.
Nitrate and nitrite carcinogen
Exposure to elevated levels of this contaminant may pose health risks. See EWG and EPA guidelines for more information.
Radium, combined (-226 and -228)
Exposure to elevated levels of this contaminant may pose health risks. See EWG and EPA guidelines for more information.
Recommended Filtration for This Water
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Shop Hydrogen FlaskFrequently Asked Questions
Is La Verne tap water safe to drink?
La Verne tap water meets EPA legal standards for drinking water. However, 5 contaminants exceed stricter EWG health guidelines, and 4 known carcinogens were detected. While legally compliant, additional filtration is recommended for optimal safety.
What contaminants are in La Verne water?
A total of 10 contaminants were detected in La Verne tap water, including Arsenic, Uranium. Of these, 5 exceed EWG health guidelines.
What's the best water filter for La Verne?
For La Verne tap water, we recommend a reverse osmosis (RO) system for drinking water — it removes up to 99.9% of contaminants including heavy metals, PFAS, and disinfection byproducts. For shower and bath water, a whole-home filtration system reduces chlorine and volatile organics.
Where does La Verne get its water?
La Verne tap water is provided by Metropolitan Water District of So. Cal., serving approximately 18,606,473 people. For detailed source water information, contact your local utility or visit the EPA's SDWIS database.
Nearby City Water Reports
Data sources: Environmental Working Group (EWG) Tap Water Database, U.S. EPA Safe Drinking Water Information System (SDWIS)
Last updated: March 2026
Methodology: Contaminant levels are compared against both EPA legal limits (Maximum Contaminant Levels) and EWG health guidelines, which are often stricter and based on the latest scientific research.
