Santa Rosa, CA Water Quality Report

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

Quick Answers

Is Santa Rosa tap water safe to drink? Santa Rosa water has high PFAS contamination. EPA UCMR5 testing detected a peak level of 96 ppt, significantly above the EPA's 4 ppt enforceable limit. A reverse osmosis or certified PFAS filter is strongly recommended.

What contaminants are in Santa Rosa water? Top PFAS compounds detected in Santa Rosa water: lithium (96 ppt). See the full table for all monitored contaminants and comparison to EPA limits.

What filter should I use in Santa Rosa? 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.

Santa Rosa Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in Santa Rosa drinking water. Recent monitoring found a peak level of 96 ppt across 2 water systems, representing an average of 53.55 ppt across 1 detected compound.

Contamination Level: HIGH – High contamination – multiple PFAS compounds detected at levels significantly above EPA safety thresholds.

Top Detected Compounds

  • lithium: 96 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)

Lead in Santa Rosa Water

EPA Lead and Copper Rule testing has recorded 104 lead samples for Santa Rosa water systems, with a 90th-percentile high of 0.022 mg/L (above 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 Santa Rosa

Santa Rosa public water systems have 58 health-based EPA Safe Drinking Water Act violations on record, including Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), Nitrite, Surface Water Treatment 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 Santa Rosa: approximately 178,127.

ZIP Codes Served

95401, 95402, 95403, 95404, 95405

What Santa Rosa 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