Hyannis, MA Water Quality (ZIP 02601)

EPA-tested PFAS, lead, and regulated contaminants for ZIP 02601 in Hyannis, MA, served by HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE.

Quick Answers

Is ZIP 02601 tap water safe to drink? Water for ZIP 02601 shows high PFAS contamination. EPA testing found a peak of 430 ppt, above the EPA's 4 ppt enforceable limit. A reverse osmosis or certified PFAS filter is strongly recommended.

What filter should I use in 02601? Match the filter to the data: reverse osmosis handles PFAS, lead, and arsenic together; NSF-53 pitchers cover the taps you drink from. A basic Brita pitcher will not remove PFAS.

ZIP 02601 Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in the water system serving ZIP 02601 (Hyannis, MA). Monitoring found a peak of 430 ppt across 1 system, averaging 37.18 ppt over 8 detected compounds.

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

Top Detected Compounds in ZIP 02601

  • PFOS: 430 ppt (exceeds the EPA 4 ppt limit)
  • PFHXS: 270 ppt (exceeds the EPA 10 ppt limit)
  • PFOA: 62 ppt (exceeds the EPA 4 ppt limit)
  • PFHPA: 58 ppt (exceeds the EPA 10 ppt limit)
  • PFNA: 35 ppt (exceeds the EPA 10 ppt limit)

Lead in ZIP 02601 Water

EPA Lead and Copper Rule testing recorded 10 lead samples for the system serving 02601, 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; homes built before 1986 should use a certified NSF/ANSI 53 lead filter.

About the Data

These figures come from EPA UCMR5 (2023-2025) plus Lead and Copper Rule and SDWIS records for the public water system serving ZIP 02601. UCMR5 is the most comprehensive national drinking water survey in US history.

Beyond water: other exposures in Hyannis, MA

Drinking water is one exposure route. These are the other federal datasets that cover ZIP 02601 and Barnstable County, MA.

Radon risk in Barnstable County, MA

The EPA places Barnstable County, MA in Zone 2 - a moderate-risk category, with a predicted average indoor radon level between 2 and 4 pCi/L. Zone maps predict the radon potential of an area from geology and existing indoor readings - they do not describe any individual home. Radon is the leading cause of lung cancer among people who have never smoked, and the only way to know your own level is a test kit.

Lead paint risk in Barnstable County, MA

Census figures show 58% of homes in Barnstable County, MA were built before 1980, and 15% before 1950. Lead-based paint was banned for residential use in 1978, so older housing stock is the strongest available proxy for lead-paint exposure. This is a statistic about the county's housing, not a test of any particular property - if your home predates 1980, a lead swab test is the way to check.

Air quality in Barnstable County, MA

Modelled annual fine-particle pollution (PM2.5) for Barnstable County, MA averages 5.4 µg/m³, within the EPA's annual PM2.5 standard of 9 µg/m³. PM2.5 is the pollution fraction small enough to reach deep into the lungs. These are CDC modelled estimates for the county as a whole, not a reading taken at this ZIP code.