Hyannis, MA Water Quality Report

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

Quick Answers

Is Hyannis, MA tap water safe to drink? Hyannis, MA water has high PFAS contamination. EPA UCMR5 testing detected a peak level of 430 ppt, significantly above the EPA's 4 ppt enforceable limit. A reverse osmosis or certified PFAS filter is strongly recommended.

What contaminants are in Hyannis, MA water? Top PFAS compounds detected in Hyannis water: PFOS (430 ppt), PFHxS (270 ppt), PFOA (62 ppt). See the full table for all monitored contaminants and comparison to EPA limits.

What filter should I use in Hyannis, MA? Match the filter to what's in Massachusetts water: reverse osmosis handles PFAS, lead, and arsenic together (90%+ removal); NSF-53 certified pitchers like Clearly Filtered or ZeroWater cover taps you drink from. A standard Brita pitcher will not remove PFAS.

Hyannis, MA Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in Hyannis, MA drinking water. Recent monitoring found a peak level of 430 ppt across 1 water system, representing an average of 61.08 ppt across 8 detected compounds.

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

Top Detected Compounds

  • PFOS: 430 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFHxS: 270 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFOA: 62 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFHpA: 58 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)
  • PFNA: 35 ppt (exceeds EPA 4 ppt limit for PFOA/PFOS)

Lead in Hyannis, MA Water

EPA Lead and Copper Rule testing has recorded 10 lead samples for Hyannis water systems, with a 90th-percentile high of 0.0013 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 Hyannis, MA: approximately 14,120.

ZIP Codes Served

02601

What Hyannis, Massachusetts Residents Should Do

  1. Enter your exact ZIP code at knowyourexposure.com for address-level data
  2. If anyone in your household is pregnant or under 5, prioritize a certified PFAS filter now and consider a home test kit
  3. For long-term protection, an NSF/ANSI 58 reverse osmosis system removes 94-99% of PFAS
  4. Read the Consumer Confidence Report (CCR) your Massachusetts utility publishes each year