PlainWater
States → Illinois

PERU

PWS ID: IL0990850 · PERU, Illinois 61354

PFAS Detected

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

Population Served
10,300
Total Violations
37
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
5,022
County
LaSalle
School/Daycare
No
MCL Violations
0
Monitoring Violations
11
Treatment Tech Violations
11

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule TT 8 1993
Chlorine MR 6 2023
Revised Total Coliform Rule MON 4 2023
LEAD AND COPPER RULE REVISIONS TT 3 2024
LEAD AND COPPER RULE REVISIONS RPT 3 2025
Public Notice 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 60 samples detected PFAS.

Contaminant Date Result MRL Status
PFBA 9/28/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 9/28/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 9/28/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/28/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/28/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/28/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/28/2023 <0.02 µg/L 0.02 µg/L Not Detected
lithium 9/28/2023 60.7000 µg/L 9 µg/L Detected
PFHpS 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/28/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxS 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 9/28/2023 <0.007 µg/L 0.007 µg/L Not Detected
9Cl-PF3ONS 9/28/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFTA 9/28/2023 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 9/28/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 9/28/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/28/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/28/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/28/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 9/28/2023 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 9/28/2023 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 4/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 4/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 4/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/18/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 4/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 4/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 4/18/2023 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 4/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 4/18/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFMPA 4/18/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 4/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 4/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 4/18/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 4/18/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 4/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 4/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 4/18/2023 <0.007 µg/L 0.007 µg/L Not Detected
lithium 4/18/2023 75.7000 µg/L 9 µg/L Detected
HFPO-DA 4/18/2023 <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.