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States → Illinois

MATTESON

PWS ID: IL0311800 · MATTESON, Illinois 60443

Population Served
18,293
Total Violations
39
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
6,692
County
Cook
School/Daycare
No
MCL Violations
4
Monitoring Violations
22
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 4 2025
Public Notice Other 4 2024
Chlorine MR 4 2023
Coliform (TCR) MCL 4 2005
Revised Total Coliform Rule MON 4 2023
Coliform (TCR) MR 3 1995
Consumer Confidence Rule Other 3 2025
TTHM MR 3 2024
Total Haloacetic Acids (HAA5) MR 3 2024
LEAD AND COPPER RULE REVISIONS RPT 2 2025
Gross Alpha, Excl. Radon and U MR 1 1977

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpS 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 7/17/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 7/17/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/17/2024 <0.006 µg/L 0.006 µg/L Not Detected
lithium 7/17/2024 <9 µg/L 9 µg/L Not Detected
PFUnA 7/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 7/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/17/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFDoA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 4/1/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFMBA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFEESA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 4/1/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 4/1/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 4/1/2025 <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.