Home/ Directory/ CT/ MERIDEN WATER DIVISION

Water system · PWSID CT0800011

MERIDEN WATER DIVISION

MERIDEN, CT · ~58,441 people served

Check your exact address → MERIDEN overview

Fair

PurityRadar safety score

PWSID

CT0800011

State

Connecticut

City

MERIDEN

Population served

58,441

Primary source

Surface water

Score history

▼ 43 points — the score moved from 100 to 57 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 57

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 Apr 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

7.9 ppt

limit 4 ppt

Above EPA limit · 2.0×

PFOA

Perfluorooctanoic acid

4.5 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

4 ppt

limit 10 ppt

Below EPA limit

PFHxA

5.8 ppt

limit —

No federal limit

PFBA

5 ppt

limit —

No federal limit

PFPeA

4.8 ppt

limit —

No federal limit

PFBS

3.1 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7000 began Aug 2025 Resolved

Other · EPA contaminant 7000 began Jul 2025 Resolved

Other · EPA contaminant 7000 began Aug 2024 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2022 Resolved

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2018 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2017 Resolved

Other · EPA contaminant 7000 began Aug 2017 Resolved

Other · EPA contaminant 7000 began Jul 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Apr 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2015 Resolved

Other · EPA contaminant 7000 began Jul 2015 Resolved

Other · EPA contaminant 7000 began Aug 2014 Resolved

Recent enforcement actions

State action · SOX Oct 2025
State action · SOX Oct 2025
State action · SOX Sep 2024
State action · SIA Aug 2024
State action · SOX Jun 2023
State action · SIF Jun 2023
State action · SIE Dec 2022
State action · SIA Dec 2022

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

3 stations · latest Oct 2022

1.19 · max 1.69 ppm · 6

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 CT0800011 — 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.