NAPERVILLE Water Quality Report
Population
156,406
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
Top 90%
of 49,184 US systems
5-Year Record
⚠️ 5
violations recorded
C
Fair
Safety Grade
5 violations in the past 5 years
System Details
- PWSID
- IL0434670
- Population Served
- 156,406
- Water Source
- Surface Water
- Owner
- Local Government
- State
- Illinois
- EPA Region
- 5
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Haloacetic Acids (HAA5) | ⚠ Monitoring/Reporting | 5 |
Violation History
2023
5
Total violations on record: 5
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Haloacetic Acids (HAA5)
How does this compare?
This systemNational average
Grade C
Avg: B-C
5violations total
18% of national average
National avg: ~28 per system
🏙️ This is a large system — serving 23× more people than the national average.