Chula Vista, CA Water Quality Report

Is Chula Vista tap water safe? See PFAS and lead contamination levels for Chula Vista, California. Compare to EPA limits and get filter recommendations.

Quick Answers

Is Chula Vista tap water safe to drink? Chula Vista tap water meets most federal EPA limits, but PFAS compounds have been detected at an average of 15.24 ppt across 9 compounds. A certified pitcher filter or reverse osmosis system is recommended for sensitive populations.

What contaminants are in Chula Vista water? Top PFAS compounds detected in Chula Vista water: lithium (65.5 ppt), PFOS (0.01 ppt), PFPeA (0.01 ppt). See the full table for all monitored contaminants and comparison to EPA limits.

What filter should I use in Chula Vista? 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.

Chula Vista Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in Chula Vista drinking water. Recent monitoring found a peak level of 65.5 ppt across 4 water systems, representing an average of 15.24 ppt across 9 detected compounds.

Contamination Level: MODERATE – Moderate contamination – PFAS detected at meaningful levels; filtration recommended.

Top Detected Compounds

  • lithium: 65.5 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFOS: 0.01 ppt
  • PFPeA: 0.01 ppt
  • PFBS: 0.01 ppt
  • PFOA: 0.01 ppt

Lead in Chula Vista Water

EPA Lead and Copper Rule testing has recorded 21 lead samples for Chula Vista water systems, with a 90th-percentile high of 0.0038 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 Chula Vista

Chula Vista public water systems have 1 health-based EPA Safe Drinking Water Act violation on record, including Lead & Copper Rule. Health-based violations mean a contaminant exceeded its federal limit or required treatment was not applied.

About the Data

These figures come from the EPA's Unregulated Contaminant Monitoring Rule 5 (UCMR5) testing program, 2023-2025. UCMR5 is the most comprehensive national drinking water survey in US history, covering 66,000+ public water systems. Population of Chula Vista: approximately 275,487.

ZIP Codes Served

91910, 91911, 91913, 91914, 91915

What Chula Vista Residents Should Do

  1. Enter your exact ZIP code at knowyourexposure.com for address-level data
  2. Install an NSF/ANSI 58 reverse osmosis filter (removes 94-99% of PFAS)
  3. If you're in a high-exposure group (pregnant, young children), consider a PFAS home test kit
  4. Review your utility's Consumer Confidence Report (CCR) annually