Los Angeles, CA Water Quality Report
Is Los Angeles tap water safe? See PFAS and lead contamination levels for Los Angeles, California. Compare to EPA limits and get filter recommendations.
Quick Answers
Is Los Angeles, CA tap water safe to drink? For Los Angeles, CA, the latest UCMR5 cycle reports no PFAS above thresholds. If you are on a private well or in an older California home, that federal dataset does not cover you – independent testing is the only way to know.
What contaminants are in Los Angeles, CA water? EPA UCMR5 tests 29 PFAS compounds plus 42+ regulated contaminants (lead, arsenic, nitrate, disinfection byproducts). The detailed table below shows every detection with comparison to EPA limits.
What filter should I use in Los Angeles, CA? For Los Angeles, CA households, reverse osmosis removes 90%+ of PFAS, lead, and arsenic. NSF-53 certified pitcher and faucet filters (ZeroWater, Clearly Filtered, LifeStraw) work for smaller households. Skip standard Brita filters for PFAS removal.
Los Angeles, CA Water Quality Summary
Recent EPA UCMR5 monitoring shows no reported PFAS detections for Los Angeles, CA water systems. That is encouraging, but it is not a guarantee: smaller utilities in California are often exempt from UCMR5 testing, and private wells are never covered. Look up your exact ZIP code for the finest-grained data available.
Contamination Level: NONE – No PFAS detected in recent testing.
Lead in Los Angeles, CA Water
EPA Lead and Copper Rule testing has recorded 10 lead samples for Los Angeles water systems, with a 90th-percentile high of 0.0052 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 Los Angeles, CA
Los Angeles public water systems have 2 health-based EPA Safe Drinking Water Act violations on record, including Chromium, Selenium. Health-based violations mean a contaminant exceeded its federal limit or required treatment was not applied.
About the Data
Source: EPA UCMR5 (Unregulated Contaminant Monitoring Rule 5), the 2023-2025 national testing program spanning 66,000+ public water systems – the broadest drinking water survey ever run in the US. Los Angeles, CA serves a population of roughly 3,979,576.
ZIP Codes Served
Compare Los Angeles, CA to Other Cities
Side-by-side PFAS contamination comparisons with same-state, regional, and national peers.
What Los Angeles, California Residents Should Do
- Enter your exact ZIP code at knowyourexposure.com for address-level data
- Request the latest Consumer Confidence Report (CCR) from your California utility – it is free and updated annually
- Choose a filter certified for PFAS: NSF/ANSI 58 reverse osmosis (94-99% removal) or an NSF-53 pitcher
- High-exposure households (pregnancy, infants, immunocompromised) should also consider a PFAS home test kit