Warminster, PA Water Quality Report

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

Quick Answers

Is Warminster tap water safe to drink? Warminster water has high PFAS contamination. EPA UCMR5 testing detected a peak level of 1,090 ppt, significantly above the EPA's 4 ppt enforceable limit. A reverse osmosis or certified PFAS filter is strongly recommended.

What contaminants are in Warminster water? Top PFAS compounds detected in Warminster water: PFOS (1,090 ppt), PFHxS (389 ppt), PFOA (349 ppt). See the full table for all monitored contaminants and comparison to EPA limits.

What filter should I use in Warminster? 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.

Warminster Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in Warminster drinking water. Recent monitoring found a peak level of 1,090 ppt across 5 water systems, representing an average of 5.04 ppt across 10 detected compounds.

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

Top Detected Compounds

  • PFOS: 1,090 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFHxS: 389 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFOA: 349 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFHpA: 71 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • lithium: 19.2 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)

Lead in Warminster Water

EPA Lead and Copper Rule testing has recorded 29 lead samples for Warminster water systems, with a 90th-percentile high of 0.00391 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 Warminster

Warminster public water systems have 15 health-based EPA Safe Drinking Water Act violations on record, including Arsenic, Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Lead & Copper Rule, Chromium. 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 Warminster: approximately 32,682.

ZIP Codes Served

18974

What Warminster 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