PlainWater
States → Connecticut

AQUARION-VALLEY

PWS ID: CT1240011 · SHELTON, Connecticut 06484

PFAS Detected

6 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
13,080
Total Violations
26
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
5,465
County
New Haven
School/Daycare
No
MCL Violations
0
Monitoring Violations
15
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Uranium MR 5 2009
Gross Alpha, Excl. Radon and U MR 5 2009
Combined Radium (-226 and -228) MR 5 2009
Consumer Confidence Rule Other 4 2018

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 18 of 300 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 8/6/2025 <0.008 µg/L 0.008 µg/L Not Detected
9Cl-PF3ONS 8/6/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/6/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/6/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 8/6/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 8/6/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFHxA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 8/6/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFEESA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/6/2025 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 8/6/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/6/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/6/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/6/2025 <9 µg/L 9 µg/L Not Detected
11Cl-PF3OUdS 8/6/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/6/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFNA 8/6/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/6/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 8/6/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/6/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 8/6/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/7/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 5/7/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 5/7/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/7/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.