Home/ Directory/ CT/ NORWALK FIRST TAXING DISTRICT

Water system · PWSID CT1030011

NORWALK FIRST TAXING DISTRICT

NORWALK, CT · ~40,256 people served

Check your exact address → NORWALK overview
58
Fair
PurityRadar safety score

PWSID

CT1030011

State

Connecticut

City

NORWALK

Population served

40,256

Primary source

Surface water

Score history

▼ 42 points — the score moved from 100 to 58 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 58

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

PFOS

Perfluorooctanesulfonic acid

11 ppt

limit 4 ppt

Above EPA limit · 2.8×

PFOA

Perfluorooctanoic acid

4.1 ppt

limit 4 ppt

Above EPA limit · 1.0×

PFHxS

Perfluorohexanesulfonic acid

4.2 ppt

limit 10 ppt

Below EPA limit

PFBS

6.4 ppt

limit —

No federal limit

PFHxA

4.8 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

3

Violations on record

0

Unaddressed

0

Health-based

6

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2022. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2021 Resolved
Monitoring & reporting · EPA contaminant 3014 began Oct 2019 Resolved
Other · EPA contaminant 7000 began Jul 2008 Resolved

Recent enforcement actions

  • State action · SIA Feb 2022
  • State action · SOX Aug 2021
  • State action · SIA Mar 2020
  • State action · SOX Feb 2020
  • State action · SIA Nov 2008
  • State action · SOX Aug 2008

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 Aug 2023

0.533 · max 1.23 mg/l as N · 171

Arsenic

1 station · latest Nov 2023

0.42 · max 0.97 ug/l · 88

Fluoride

1 station · latest Nov 2023

0.06 · max 0.09 mg/l · 88

Atrazine

1 station · latest Jul 2023

4.54 · max 9.84 ng/l · 33

Copper

1 station · latest Sep 2023

1.1 · max 2 ug/l · 28

Manganese

1 station · latest Sep 2023

22.9 · max 72.3 ug/l · 28

Uranium

1 station · latest Sep 2023

0.585 · max 1.1 ug/l · 28

Lead

1 station · latest Sep 2023

0.077 · max 0.363 ug/l · 26

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 CT1030011 — 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.