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ROCKFORD

PWS ID: IL2010300 · ROCKFORD, Illinois 61102

PFAS Detected

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

Population Served
147,051
Total Violations
268
Health-Based Violations
245
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
51,060
County
Winnebago
School/Daycare
No
MCL Violations
245
Monitoring Violations
21
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 223 2012
Gross Alpha, Excl. Radon and U MCL 22 2006
Nitrite MR 8 2020
Nitrate MR 4 2022
cis-1,2-Dichloroethylene MR 4 2023
Total Haloacetic Acids (HAA5) MR 4 2024
Consumer Confidence Rule Other 2 2010
Gross Alpha, Excl. Radon and U MR 1 1977

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 1320 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/7/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/7/2024 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 5/7/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 5/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 5/7/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFDA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 5/7/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFHxS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 5/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 5/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/7/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/7/2024 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 5/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 4/29/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDoA 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 4/29/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/29/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/29/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 4/29/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 4/29/2025 <0.008 µg/L 0.008 µg/L Not Detected
11Cl-PF3OUdS 4/29/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 4/29/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFTrDA 4/29/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFMBA 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/29/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 4/29/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 4/29/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 4/29/2025 <0.003 µg/L 0.003 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.