CheckPFAS

ZIP Code 06382

High Risk
High Risk PFAS Risk Level

PFAS above EPA limits detected

3 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.

5
PFAS Detected
3
Above EPA Limits
1
Water System
405%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 405% of limit
Detected: 16.20 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 168% of limit
Detected: 6.70 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 125% of limit
Detected: 12.50 ppt
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NORWICH PUBLIC UTILITIES

CT1040011 High Risk
Water Type
Groundwater
PFAS Detected
5
Above MCL
3
State
Connecticut
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
16.20ppt
405% of limit
4 ppt⚠ Exceeds MCL
PFOA
Perfluorooctanoic acid
6.70ppt
168% of limit
4 ppt⚠ Exceeds MCL
PFHxS
Perfluorohexane sulfonic acid
12.50ppt
125% of limit
10 ppt⚠ Exceeds MCL
PFBS
Perfluorobutane sulfonic acid
6.00pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
3.90pptNo federal limit—Unregulated

Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.

UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.

Detection values represent the highest single-sample result measured at entry points to the distribution system.

View raw EPA data →