PlainWater
States → Connecticut

AVON WATER CO

PWS ID: CT0040011 · CLINTON, Connecticut 06413

PFAS Detected

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

Population Served
11,590
Total Violations
476
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
4,920
County
Hartford
School/Daycare
No
MCL Violations
4
Monitoring Violations
467
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Toxaphene MR 15 2018
Total Polychlorinated Biphenyls (PCB) MR 13 2018
Chlordane MR 13 2018
HEXACHLOROBENZENE MR 11 2018
Hexachlorocyclopentadiene MR 11 2018
OXAMYL MR 11 2018
Pentachlorophenol MR 11 2018
Simazine MR 11 2018
2,4,5-TP MR 11 2018
BHC-GAMMA MR 11 2018
Carbofuran MR 11 2018
LASSO MR 11 2018
Heptachlor epoxide MR 11 2018
2,4-D MR 11 2018
1,2-DIBROMO-3-CHLOROPROPANE MR 11 2018
Dalapon MR 11 2018
Glyphosate MR 11 2018
Di(2-ethylhexyl) adipate MR 11 2018
Di(2-ethylhexyl) phthalate MR 11 2018
Dinoseb MR 11 2018
Benzo(a)pyrene MR 11 2018
Diquat MR 11 2018
Picloram MR 11 2018
Aldicarb sulfone MR 11 2018
Atrazine MR 11 2018
Methoxychlor MR 11 2018
Aldicarb MR 11 2018
Heptachlor MR 11 2018
ETHYLENE DIBROMIDE MR 11 2018
Endrin MR 11 2018

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 15 of 360 samples detected PFAS.

Contaminant Date Result MRL Status
PFOS 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 6/18/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 6/18/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 6/18/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 6/18/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 6/18/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFMBA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 6/18/2024 <9 µg/L 9 µg/L Not Detected
PFHpS 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 6/18/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFHxS 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 6/18/2024 0.0030 µg/L 0.003 µg/L Detected
PFPeA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 6/18/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/18/2024 0.0070 µg/L 0.004 µg/L Detected
PFNA 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 6/18/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 6/18/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/18/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 6/18/2024 0.0030 µg/L 0.003 µg/L 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.