Cohasset Water Dept: health-based drinking water violation (tthm) in Cohasset, MA

Cohasset Water Dept (Cohasset, Massachusetts): health-based drinking water violation (tthm) in Cohasset, MA. Its population served of 7,555 is top-decile (96th percentile of 456 records). Dated 126 days ago, it serves as a historical benchmark. Score 75/100. As of 2026-11-04, from U.S. EPA Safe Drinking Water Information System (SDWIS) via Envirofacts and EPA ECHO.

Data as of · Compiled by Zalwin from U.S. EPA Safe Drinking Water Information System (SDWIS) via Envirofacts and EPA ECHO

population served: 7,555 · 96th percentile of 456 WaterSystemViolationPulse records · 53.2x the median

Free preview: all 11 published fields of this record are shown below. Locked: 5 related MA WaterSystemViolationPulse records and the 6-column CSV export.

FieldValue
Water systemCohasset Water Dept
PWSIDMA4065000
System typeCommunity water system
Owner typeLocal government
Population served7555
LocationCohasset, MA
ContaminantTTHM
Rule groupDisinfectants and disinfection byproducts
Compliance period2026-07-01 to 2026-09-30
StatusKnown, unaddressed
Public notice tier2
population served percentile96th of 456 (median 142, 53.2x median)
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  • Source agency: U.S. EPA Safe Drinking Water Information System (SDWIS) via Envirofacts and EPA ECHO
  • Record date: 2026-07-01
  • Data refreshed: 2026-11-04
  • Refunds on request within 14 days

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LIVE PUBLIC DATA Source: U.S. EPA Safe Drinking Water Information System (SDWIS) via Envirofacts and EPA ECHO · Last refreshed: Wed, 04 Nov 2026 06:06:47 GMT

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Peer benchmark and outreach value: Cohasset Water Dept and 6 Massachusetts peers

  • Massachusetts WaterSystemViolationPulse records like this one: 6
  • Cohasset Water Dept's population served: 96th percentile of 456 records
  • Timing: Low: older than 30 days
  • Estimated pipeline if you contact every Massachusetts peer: $1,200 (peers × rate × deal size; an estimate from your assumptions, not a forecast)

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75 / 100 Score

  • Not yet returned to compliance.
  • Serves 7,555 people.
  • Community water system.

What is the WaterSystemViolationPulse record for Cohasset Water Dept in Cohasset, Massachusetts?

Cohasset Water Dept (Cohasset, MA), a community water system serving 7,555 people, has a health-based tthm violation from 2026-07-01; status: known, unaddressed.

How does Cohasset Water Dept compare to other Massachusetts WaterSystemViolationPulse records?

This is a top-decile record: its population served of 7,555 is 53.2x the median of 142 across 456 records. It is 126 days old; check the official source for later updates before acting. Its Score of 75/100 puts it among the stronger signals in this feed.

Cohasset Water Dept vs. top 3 peers

OrganizationLocationAmountPercentileRecord date
Cohasset Water DeptCohasset, MA7,55596th2026-07-01
Carolina Trace Water SystemSanford, NC4,51694th2026-07-01
Odrc-Pickaway Correction PwsOH3,37691st2026-06-30
Gladwin, City OfGladwin, MI2,93389th2026-06-16

Related records

WaterSystemViolationPulse: Disinfectants and disinfection byproducts WaterSystemViolationPulse: Community water system WaterSystemViolationPulse: records in Massachusetts

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From EPA SDWIS federal data, which lags state records by up to a quarter. A violation is a regulatory finding about a water system, not a statement about current water quality. Verify with the state drinking water program.

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