PlainWater
States → Illinois

DEERFIELD

PWS ID: IL0974340 · DEERFIELD, Illinois 60015

Population Served
19,196
Total Violations
44
Health-Based Violations
16
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
6,281
County
Lake
School/Daycare
No
MCL Violations
10
Monitoring Violations
13
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 11 2025
Coliform (TCR) MCL 10 2013
Lead and Copper Rule MR 4 2005
Interim Enhanced Surface Water Treatment Rule TT 4 2005
TTHM MR 4 2025
Total Haloacetic Acids (HAA5) MR 4 2025
Lead and Copper Rule TT 2 1992
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
lithium 8/7/2024 <9 µg/L 9 µg/L Not Detected
PFMBA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/7/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 8/7/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/7/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 8/7/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFHpA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/7/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFOS 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/7/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/9/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/9/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 5/9/2024 <9 µg/L 9 µg/L Not Detected
PFTrDA 5/9/2024 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 5/9/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFPeA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/9/2024 <0.008 µg/L 0.008 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.