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Public Water System
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE
PWSID MA4020004 · Massachusetts · 35,000 people served
A
ExcellentHYANNIS WATER SYSTEM, TOWN OF BARNSTABLE is an EPA-regulated public water system in Massachusetts (PWSID MA4020004). It serves an estimated 35,000 residents — a small city of customers — across 1 community across 1 ZIP code.
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE has maintained full EPA Safe Drinking Water Act compliance over the most recent five-year reporting window. No health-based Maximum Contaminant Level (MCL) exceedances are on record. The grade of A reflects this clean compliance history.
Service Area
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Centered on the averaged ZIP-code centroid of 1 ZIP served.
Population
35,000
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE's water systems have met EPA health-based Maximum Contaminant Level (MCL) requirements throughout the EPA reporting window. This does not mean zero detection of regulated contaminants — it means all measured concentrations remained below their federal action levels.
Cities Served by HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE
ZIP Codes Served
About this system
EPA records this system as PWSID MA4020004. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE directly or review their annual Consumer Confidence Report (CCR).
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