Oceanside, CA Water Quality Report

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

Quick Answers

Is Oceanside tap water safe to drink? Oceanside tap water meets most federal EPA limits, but PFAS compounds have been detected at an average of 32.71 ppt across 1 compound. A certified pitcher filter or reverse osmosis system is recommended for sensitive populations.

What contaminants are in Oceanside water? Top PFAS compounds detected in Oceanside water: lithium (65 ppt). See the full table for all monitored contaminants and comparison to EPA limits.

What filter should I use in Oceanside? 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.

Oceanside Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in Oceanside drinking water. Recent monitoring found a peak level of 65 ppt across 3 water systems, representing an average of 32.71 ppt across 1 detected compound.

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

Top Detected Compounds

  • lithium: 65 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)

Lead in Oceanside Water

EPA Lead and Copper Rule testing has recorded 16 lead samples for Oceanside water systems, with a 90th-percentile high of 0.0018 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.

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 Oceanside: approximately 175,742.

ZIP Codes Served

92054, 92056, 92057, 92058

What Oceanside 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