ZIP Code 61011
High RiskPFAS above EPA limits detected
3 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
8
PFAS Detected
3
Above EPA Limits
1
Water System
183%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 183% of limit
Detected: 7.30 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 182% of limit
Detected: 18.20 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 155% of limit
Detected: 6.20 ppt
NORTH PARK PWD
IL2015500 High RiskWater Type
Groundwater
PFAS Detected
8
Above MCL
3
State
Illinois
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 7.30ppt | 183% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 18.20ppt | 182% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 6.20ppt | 155% of limit
| 4 ppt | ⚠ Exceeds MCL |
lithium | 9330.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.40ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.70ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.20ppt | No federal limit | — | Unregulated |
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.