C48/100
Temecula Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 175,247 residents · California
What's In Temecula's Tap Water?
76
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
vanadium | 31.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1997.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
Pechanga
Population Served
29,100
Water Source
Purchased Surface Water
System ID
090605013
RANCHO CALIFORNIA WATER DISTRICT
Population Served
146,147
Water Source
Purchased Surface Water
System ID
CA3310038
Frequently Asked Questions About Temecula Water
Is Temecula tap water safe to drink?
Temecula, California tap water receives a grade of C (48/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 83 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Temecula's water?
Of the 76 contaminants tested in Temecula's water supply, the most notable include Lead (90th percentile), vanadium. No contaminants exceed EPA legal limits. 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Temecula have any water quality violations?
Yes, Temecula has 83 EPA violation(s) on record, with the most recent in 2005. Violation types include Other, MR, MCL. 9 of these are health-based violations, which are the most serious category.
Do I need a water filter in Temecula?
Temecula water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 2 contaminant(s) exceed these stricter goals.
Where does Temecula's tap water come from?
Temecula's drinking water is sourced from purchased surface water and supplied by Pechanga and 1 other water system(s). The system serves approximately 175,247 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Temecula's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Temecula's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Temecula's water compare to other cities in California?
Temecula's water quality score of 48/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Temecula's water quality?
If you have concerns about Temecula's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (Pechanga) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.