CITY WATER REPORT
Is Hyannis Town Barnstable Tap Water Safe? 2026 Water Quality Report
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE serves Hyannis Town Barnstable · 35,000 residents.
- Utility
- HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE
- Population served
- 35,000
- Water source
- Groundwater
- Disinfectant
- Pending utility report
- Hardness
- Pending utility report
Perfluorooctanoic acid (PFOA): not detected (limit 4.0 ng/L).
About this score
What the record shows
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE (EPA PWSID MA4020004) delivers groundwater to 35,000 residents. This report reflects 3 federally regulated PFAS result(s) from the 2024 UCMR5 round and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
Your water system
resolution confirmed
- HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE — serves most of the city
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE is the primary municipal supplier for most Hyannis Town Barnstable addresses. Confirm your supplier on your utility bill.
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE is the public system on record for this city. This identifies which utility serves the city — confirm yours on your water bill before acting on a specific finding.
What stands out in Hyannis Town Barnstable
Each row links to a dated measurement in the supplier profile. A missing measurement is never shown as a non-detect.
What this data doesn’t tell you
Public water-system monitoring reflects the system, not the water at an individual household tap at a given moment. Home plumbing, fixtures, storage, sampling location and timing can all change what actually reaches your glass.
The data behind this report
| Contaminant | Result | Benchmark | Sampled | Source |
|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | 2024 | UCMR5 Analytical Results — HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE (MA4020004) |
| Perfluorooctane sulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | 2024 | UCMR5 Analytical Results — HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE (MA4020004) |
| Perfluorohexane sulfonic acid (PFHxS) | < 10 ng/L | 10.0 ng/L federal MCL (2024) | 2024 | UCMR5 Analytical Results — HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE (MA4020004) |
| Lead (90th percentile) | 0 µg/L | 15 µg/L federal action level | 2025-2025 | Lead & Copper Rule 90th-percentile — HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE (MA4020004) |
Perfluorooctanoic acid (PFOA)
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Sampled
- 2024
Perfluorooctane sulfonic acid (PFOS)
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Sampled
- 2024
Perfluorohexane sulfonic acid (PFHxS)
- Result
- < 10 ng/L
- Benchmark
- 10.0 ng/L federal MCL (2024)
- Sampled
- 2024
Lead (90th percentile)
- Result
- 0 µg/L
- Benchmark
- 15 µg/L federal action level
- Sampled
- 2025-2025
Every value is the published result from the cited public record. A reporting limit is the lowest level the method could reliably quantify — a non-detect is not a guarantee of zero.
What can you do about it?
To reduce exposure to what was reported in Hyannis Town Barnstable, these treatment technologies are relevant to the contaminants found here:
- Reverse osmosis
- NSF/ANSI 53 lead-certified filters
- Replacing lead service lines
Understand water treatment technologies — then the specific products below are matched to these findings.
Recommended solutions
NSF/ANSI 53 lead-reduction filter (optional)
leadOur pick: Clearly Filtered Water Filter Pitcher, 10 Cup BPA Free Water Filtration
Recommended because There is no safe level of lead, and older home plumbing can add it at the tap.
Recommendations are matched to the published findings first; the commercial offer is looked up afterwards and never changes which products qualify. As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
Frequently asked questions
Who provides tap water in Hyannis Town Barnstable?
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE (PWS ID MA4020004) is the public water system on record for Hyannis Town Barnstable, Massachusetts. Confirm the utility on your water bill before acting on a specific finding.
Where does Hyannis Town Barnstable get its drinking water?
Groundwater (primary source of record in EPA SDWIS).
What does the latest Hyannis Town Barnstable water report show?
Across the tracked parameters, PurityMap's current record for Hyannis Town Barnstable shows 0 contaminants measured above their benchmark and 4 within benchmark. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
Is there lead in Hyannis Town Barnstable's tap water?
In Hyannis Town Barnstable, lead is detected but within its action level in the published record. Lead can still enter water from household plumbing after it leaves the system, so a system result cannot rule out an individual tap — a certified home test is the only way to know yours.
Are PFAS "forever chemicals" in Hyannis Town Barnstable's water?
PFAS compounds appear in Hyannis Town Barnstable's published record; the findings show each one's measured state and how it compares to its benchmark.
Sources
Methodology: how we analyze water.
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- Systems published
- 1 of 1
- Latest sample on record
- 2024 (PFAS) / LCR (lead)
The record, not the water. These describe how completely the city is monitored — not a quality score.