Is WEIR RIVER WATER SYSTEM Water Safe to Drink in 2026?
Massachusetts · PWSID MA4131000 · Surface water
Population served
45,339
Cities served
HINGHAM
State / jurisdiction
Massachusetts (MA)
PWSID
MA4131000
F
TAP WATER GRADE
High risk
Model score 0/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
41 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS above EPA MCL (UCMR5 regulated compounds)
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CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFOAregulated
6.4
4 ppt
Exceeds
Above health advisory
PFHxA
6.0
—
Within / n/a
Unregulated (monitored)
PFBA
5.7
—
Within / n/a
Unregulated (monitored)
PFPeA
4.3
—
Within / n/a
Unregulated (monitored)
PFBS
3.3
—
Within / n/a
Unregulated (monitored)
Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 41 violation-related records with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
WHY THIS FOR WEIR RIVER WATER SYSTEM · Chosen for WEIR RIVER WATER SYSTEM because PFAS was detected at 6.4 ppt in UCMR5 — above the 4 ppt limit for some regulated compounds — and this system shows 41 violation record(s) in the latest federal snapshot. RO removes 99%+ of PFAS at the tap.
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