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States → Illinois

SANDWICH

PWS ID: IL0374850 · SANDWICH, Illinois 60548

Population Served
7,156
Total Violations
48
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,777
County
DeKalb
School/Daycare
No
MCL Violations
5
Monitoring Violations
33
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 5 1997
p-Dichlorobenzene MR 4 1992
Trichloroethylene MCL 4 1990
1,1-Dichloroethylene MR 4 1992
1,2-Dichloroethane MR 3 1989
1,1,1-Trichloroethane MR 3 1989
Carbon tetrachloride MR 3 1989
Nitrate-Nitrite MR 3 1999
LEAD AND COPPER RULE REVISIONS RPT 3 2025
Benzene MR 3 1989
Trichloroethylene MR 3 1989
Lead and Copper Rule MR 1 1994
Gross Alpha, Excl. Radon and U MR 1 1977
Combined Radium (-226 and -228) MCL 1 1998

PFAS Testing Results (UCMR5)

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

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