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States → Illinois

ANTIOCH

PWS ID: IL0970050 · ANTIOCH, Illinois 60002

PFAS Detected

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

Population Served
14,175
Total Violations
115
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
4,598
County
Lake
School/Daycare
No
MCL Violations
3
Monitoring Violations
87
Treatment Tech Violations
13

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 17 2006
Lead and Copper Rule MR 13 2023
Lead and Copper Rule TT 13 2000
Public Notice Other 4 2008
BHC-GAMMA MR 3 1993
Toxaphene MR 3 1993
LASSO MR 3 1993
Heptachlor MR 3 1993
Heptachlor epoxide MR 3 1993
2,4-D MR 3 1993
Total Polychlorinated Biphenyls (PCB) MR 3 1993
1,2-DIBROMO-3-CHLOROPROPANE MR 3 1993
Chlordane MR 3 1993
Coliform (TCR) MCL 3 1995
Aldicarb sulfoxide MR 3 1993
Aldicarb MR 3 1993
Aldicarb sulfone MR 3 1993
ETHYLENE DIBROMIDE MR 3 1993
Methoxychlor MR 3 1993
Atrazine MR 3 1993
Carbofuran MR 3 1993
2,4,5-TP MR 3 1993
Pentachlorophenol MR 3 1993
Chlorine MR 2 2006
Gross Alpha, Excl. Radon and U MR 1 1977
Consumer Confidence Rule Other 1 2025

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 7 of 420 samples detected PFAS.

Contaminant Date Result MRL Status
lithium 5/15/2025 <9 µg/L 9 µg/L Not Detected
PFNA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
9Cl-PF3ONS 5/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/15/2025 <0.006 µg/L 0.006 µg/L Not Detected
4:2 FTS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/15/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 5/15/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/15/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 5/15/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/15/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 5/15/2025 <9 µg/L 9 µg/L Not Detected
NFDHA 5/15/2025 <0.02 µg/L 0.02 µg/L Not Detected
NMeFOSAA 5/15/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFNA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/15/2025 <0.003 µg/L 0.003 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.