TapScore

CHICAGO Water Quality Report

Population

2,746,388

people served

Water Source

🌊 Surface

rivers, lakes, reservoirs

National Rank

Top 90%

of 49,184 US systems

5-Year Record

⚠️ 22

violations recorded

C

Fair

Safety Grade

22 violations in the past 5 years, including 1 health-based

System Details

PWSID
IL0316000
Population Served
2,746,388
Water Source
Surface Water
Owner
Local Government
State
Illinois
EPA Region
5

Contaminants of Concern

ContaminantStatusViolations
Contaminant 5000✕ Health-Based3
Contaminant 7000⚠ Monitoring/Reporting7
Contaminant 0300⚠ Monitoring/Reporting8
Contaminant 2005⚠ Monitoring/Reporting2
Contaminant 2010⚠ Monitoring/Reporting2
Contaminant 2015⚠ Monitoring/Reporting2
Contaminant 2020⚠ Monitoring/Reporting2
Contaminant 2031⚠ Monitoring/Reporting2
Contaminant 2032⚠ Monitoring/Reporting2
Contaminant 2033⚠ Monitoring/Reporting2
Contaminant 2035⚠ Monitoring/Reporting2
Contaminant 2036⚠ Monitoring/Reporting2
Contaminant 2037⚠ Monitoring/Reporting2
Contaminant 2039⚠ Monitoring/Reporting2
Contaminant 2040⚠ Monitoring/Reporting2
Contaminant 2041⚠ Monitoring/Reporting2
Contaminant 2042⚠ Monitoring/Reporting2
Contaminant 2043⚠ Monitoring/Reporting2
Contaminant 2044⚠ Monitoring/Reporting2
Contaminant 2046⚠ Monitoring/Reporting2
Contaminant 2047⚠ Monitoring/Reporting2
Atrazine⚠ Monitoring/Reporting2
Benzene⚠ Monitoring/Reporting2
Contaminant 2065⚠ Monitoring/Reporting2
Contaminant 2067⚠ Monitoring/Reporting2
Contaminant 2070⚠ Monitoring/Reporting2
Contaminant 2105⚠ Monitoring/Reporting2
Contaminant 2110⚠ Monitoring/Reporting2
Contaminant 2274⚠ Monitoring/Reporting2
Contaminant 2306⚠ Monitoring/Reporting2
Contaminant 2326⚠ Monitoring/Reporting2
Contaminant 2356⚠ Monitoring/Reporting2
Contaminant 2383⚠ Monitoring/Reporting2
Contaminant 2931⚠ Monitoring/Reporting2
Contaminant 2946⚠ Monitoring/Reporting2
Contaminant 2959⚠ Monitoring/Reporting2
Contaminant 2920⚠ Monitoring/Reporting12
Contaminant 5200⚠ Monitoring/Reporting1
Contaminant 7500⚠ Monitoring/Reporting1

Violation History

2025
6
2024
12
2021
4
2020
2
2019
66
2016
6
2003
1
1993
1

Total violations on record: 98

Service Area

Cities Served

CHICAGO

ZIP Codes Served

60611

Recommended Water Filters

Based on contaminants detected in this water system:

Activated Carbon Filter

Effective for chlorine, THMs, pesticides, and taste/odor improvement

Removes: Atrazine, Benzene

$20–$100

How does this compare?

This systemNational average
Grade C
Avg: B-C
98violations total

350% of national average

National avg: ~28 per system

🏙️ This is a large system — serving 411× more people than the national average.