Temecula, CA Water Quality Report
Is Temecula tap water safe? See PFAS and lead contamination levels for Temecula, California. Compare to EPA limits and get filter recommendations.
Quick Answers
Is Temecula, CA tap water safe to drink? Temecula, CA water has high PFAS contamination. EPA UCMR5 testing detected a peak level of 120 ppt, significantly above the EPA's 4 ppt enforceable limit. A reverse osmosis or certified PFAS filter is strongly recommended.
What contaminants are in Temecula, CA water? Top PFAS compounds detected in Temecula water: PFHxS (120 ppt), PFOS (82 ppt), PFOA (53 ppt). See the full table for all monitored contaminants and comparison to EPA limits.
What filter should I use in Temecula, CA? An NSF/ANSI 58 reverse osmosis system is the strongest option, removing 90%+ of PFAS along with lead and arsenic. For renters or smaller households in Temecula, an NSF-53 certified pitcher (Clearly Filtered, ZeroWater, LifeStraw) is a practical alternative. Ordinary Brita cartridges are not certified for PFAS.
Temecula, CA Water Quality Summary
EPA testing has detected PFAS "forever chemicals" in Temecula, CA drinking water. Recent monitoring found a peak level of 120 ppt across 4 water systems, representing an average of 7.22 ppt across 8 detected compounds.
Contamination Level: HIGH – High contamination – multiple PFAS compounds detected at levels significantly above EPA safety thresholds.
Top Detected Compounds
- PFHxS: 120 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
- PFOS: 82 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
- PFOA: 53 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
- PFHpA: 22 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
- PFHxA: 0.01 ppt
Lead in Temecula, CA Water
EPA Lead and Copper Rule testing has recorded 20 lead samples for Temecula water systems, with a 90th-percentile high of 0.0125 mg/L (within the EPA 0.015 mg/L action level). There is no safe level of lead for children; if your home was built before 1986, a certified NSF/ANSI 53 lead-removal filter is recommended.
EPA Violations in Temecula, CA
Temecula public water systems have 1 health-based EPA Safe Drinking Water Act violation on record, including Gross Alpha (excl. radon & uranium). Health-based violations mean a contaminant exceeded its federal limit or required treatment was not applied.
About the Data
The numbers on this page are drawn from EPA UCMR5 monitoring (2023-2025), which covers 66,000+ public water systems nationwide, including those serving Temecula, CA's approximately 113,828 residents.
ZIP Codes Served
What Temecula, California Residents Should Do
- Enter your exact ZIP code at knowyourexposure.com for address-level data
- Install an NSF/ANSI 58 reverse osmosis filter (removes 94-99% of PFAS)
- If you're in a high-exposure group (pregnant, young children), consider a PFAS home test kit
- Review the Consumer Confidence Report (CCR) your California utility publishes annually