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States → Illinois

YORKVILLE

PWS ID: IL0930250 · YORKVILLE, Illinois 60560

PFAS Detected

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

Population Served
23,000
Total Violations
324
Health-Based Violations
281
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
8,695
County
Kendall
School/Daycare
No
MCL Violations
281
Monitoring Violations
20
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 222 2006
Gross Alpha, Excl. Radon and U MCL 59 2006
Coliform (TCR) MR 6 1998
Combined Radium (-226 and -228) MR 6 2021
Consumer Confidence Rule Other 6 2019
Combined Uranium MR 4 2005
Lead and Copper Rule MR 3 2020
Gross Alpha, Excl. Radon and U MR 1 1977

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 6 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
PFDoA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 5/27/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/27/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/27/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 5/27/2025 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 5/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 5/27/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFBA 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 5/27/2025 27.3000 µg/L 9 µg/L Detected
PFHpS 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/27/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/27/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFPeA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/27/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFDoA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/27/2025 30.8000 µg/L 9 µg/L Detected
PFHpS 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/27/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFMBA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 5/27/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFEESA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 5/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 5/27/2025 <0.006 µg/L 0.006 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.