Public water system · IL0313150
ActiveWestchester
Community water system in Cook County, Illinois, drawing primarily on purchased surface water.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
16,241
Service connections
7,207
Primary source
SWP
Purchased 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 |
| 2024-10-01 | 27 | 2456 | No | Resolved |
| 2024-10-01 | 27 | 2950 | No | Resolved |
| 2020-12-30 | 66 | 5000 | No | Resolved |
| 1993-01-01 | 65 | 5000 | Yes | Resolved |
| 1992-12-07 | 57 | 5000 | Yes | Resolved |
Westchester: frequently asked questions
Is Westchester's water safe to drink?
Westchester 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 Westchester?
Westchester (PWSID IL0313150) is a local government-owned community water system, regulated by the IL state drinking water program.
How many people does Westchester serve?
Westchester reports serving 16,241 people through 7,207 service connections in Cook County, Illinois.
Where does Westchester get its water?
EPA SDWIS lists this system's primary water source as purchased surface water.
Other water systems in Cook County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chicago | Cook | 2,746,388 | Community | Surface water |
| 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 |