Home/ Directory/ CT/ MANCHESTER WATER DEPARTMENT

Water system · PWSID CT0770021

MANCHESTER WATER DEPARTMENT

MANCHESTER, CT · ~51,198 people served

Check your exact address → MANCHESTER overview

Fair

PurityRadar safety score

PWSID

CT0770021

State

Connecticut

City

MANCHESTER

Population served

51,198

Primary source

Surface water

Score history

▼ 47 points — the score moved from 100 to 53 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 53

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Jul 2024). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

6.9 ppt

limit 4 ppt

Above EPA limit · 1.7×

PFOS

Perfluorooctanesulfonic acid

6.1 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFHxS

Perfluorohexanesulfonic acid

3.8 ppt

limit 10 ppt

Below EPA limit

PFBS

5.3 ppt

limit —

No federal limit

PFPeA

4.1 ppt

limit —

No federal limit

PFHpA

3.5 ppt

limit —

No federal limit

PFHxA

3.2 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2025. Official EPA record →

Monitoring & reporting · Bromate began Nov 2024 Resolved

Other · EPA contaminant 7000 began Aug 2023 Resolved

Monitoring & reporting · EPA contaminant 1011 began Jul 2018 Resolved

Other · EPA contaminant 7000 began Jul 2014 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2010 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2010 Resolved

Other · EPA contaminant 7000 began Oct 2010 Resolved

Monitoring & reporting · Total coliform began Oct 2009 Resolved

Other · EPA contaminant 7000 began Jul 2009 Resolved

Recent enforcement actions

State action · SIE Jan 2025
State action · SIA Jan 2025
State action · SIA Jan 2025
State action · SIE Jan 2025
State action · SOX Dec 2024
State action · SOX Dec 2024
State action · SOX Aug 2023
State action · SIA Aug 2023

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Sep 2021

0.411 · max 0.645 ppm · 5

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CT0770021 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.