Redmond, WA Water Quality Report

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

Quick Answers

Is Redmond tap water safe to drink? Redmond tap water meets most federal EPA limits, but PFAS compounds have been detected at an average of 0.49 ppt across 7 compounds. A certified pitcher filter or reverse osmosis system is recommended for sensitive populations.

What contaminants are in Redmond water? Top PFAS compounds detected in Redmond water: lithium (13 ppt), PFHxS (0.02 ppt), PFBS (0.01 ppt). See the full table for all monitored contaminants and comparison to EPA limits.

What filter should I use in Redmond? 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.

Redmond Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in Redmond drinking water. Recent monitoring found a peak level of 13 ppt across 2 water systems, representing an average of 0.49 ppt across 7 detected compounds.

Contamination Level: LOW – Low contamination – PFAS detected but at lower levels; monitoring continues.

Top Detected Compounds

  • lithium: 13 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFHxS: 0.02 ppt
  • PFBS: 0.01 ppt
  • PFOS: 0.01 ppt
  • PFPeA: 0 ppt

Lead in Redmond Water

EPA Lead and Copper Rule testing has recorded 23 lead samples for Redmond water systems, with a 90th-percentile high of 0.0058 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 Redmond: approximately 73,256.

ZIP Codes Served

98052, 98053, 98073, 98074

What Redmond 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