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HERRIN

PWS ID: IL1990400 · HERRIN, Illinois 62948

PFAS Detected

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

Population Served
12,747
Total Violations
19
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
6,127
County
Williamson
School/Daycare
No
MCL Violations
0
Monitoring Violations
7
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 4 2024
LEAD AND COPPER RULE REVISIONS RPT 2 2025
Lead and Copper Rule MR 2 2025
Consumer Confidence Rule Other 2 2025
Gross Alpha, Excl. Radon and U MR 1 1977

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 8/20/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 8/20/2024 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 8/20/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDoA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/20/2024 0.0057 µg/L 0.005 µg/L Detected
HFPO-DA 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/20/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/20/2024 <9 µg/L 9 µg/L Not Detected
PFUnA 8/20/2024 <0.002 µg/L 0.002 µg/L Not Detected
NFDHA 8/20/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 5/21/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFUnA 5/21/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 5/21/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/21/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/21/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/21/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 5/21/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/21/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/21/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/21/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 5/21/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 5/21/2024 <0.008 µg/L 0.008 µg/L Not Detected
11Cl-PF3OUdS 5/21/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 5/21/2024 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 5/21/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 5/21/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 5/21/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/21/2024 <9 µg/L 9 µg/L Not Detected
6:2 FTS 5/21/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/21/2024 <0.005 µg/L 0.005 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.