Public water system · IL0316000
ActiveChicago
Community water system in Cook County, Illinois, drawing primarily on surface water.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,746,388
Service connections
484,979
Primary source
SW
Surface water
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | 4H | 5200 | No | Unaddressed |
| 2025-06-15 | 75 | 7500 | No | Unaddressed |
| 2025-05-01 | 38 | 0300 | No | Resolved |
| 2025-04-01 | 38 | 0300 | No | Resolved |
| 2025-01-01 | 03 | 2041 | No | Archived |
| 2024-07-01 | 27 | 2920 | No | Resolved |
| 2024-07-01 | 27 | 2920 | No | Resolved |
| 2024-07-01 | 27 | 2920 | No | Resolved |
| 2024-07-01 | 27 | 2920 | No | Resolved |
| 2021-12-30 | 66 | 5000 | No | Resolved |
| 2021-07-01 | 71 | 7000 | No | Resolved |
| 2020-07-01 | 71 | 7000 | No | Resolved |
Chicago: frequently asked questions
Is Chicago's water safe to drink?
Chicago is an active community water system regulated under the Safe Drinking Water Act, overseen by the IL state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs Chicago?
Chicago (PWSID IL0316000) is a local government-owned community water system, regulated by the IL state drinking water program.
How many people does Chicago serve?
Chicago reports serving 2,746,388 people through 484,979 service connections in Cook County, Illinois.
Where does Chicago get its water?
EPA SDWIS lists this system's primary water source as surface water.
Other water systems in Cook County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cicero | Cook | 83,000 | Community | Purchased surface water |
| Schaumburg | Cook | 75,750 | Community | Purchased surface water |
| Evanston | Cook | 74,486 | Community | Surface water |
| Arlington Heights | Cook | 73,320 | Community | Purchased surface water |
| Palatine | Cook | 70,875 | Community | Purchased surface water |
| Skokie | Cook | 66,422 | Community | Purchased surface water |