Public water system · IL0312790
ActiveSauk
Community water system in Cook County, Illinois, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
9,921
Service connections
3,200
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-07-12 | 75 | 7500 | No | Resolved |
| 2025-07-12 | 75 | 7500 | No | Resolved |
| 2025-07-12 | 75 | 7500 | No | Resolved |
| 2025-07-12 | 75 | 7500 | No | Resolved |
| 2025-07-01 | 71 | 7000 | No | Resolved |
| 2024-07-01 | 72 | 7000 | No | Resolved |
| 2024-04-01 | 03 | 2968 | No | Resolved |
| 2024-04-01 | 03 | 2955 | No | Resolved |
| 2024-04-01 | 03 | 2969 | No | Resolved |
| 2024-04-01 | 03 | 2989 | No | Resolved |
| 2024-04-01 | 03 | 2380 | No | Resolved |
| 2024-04-01 | 03 | 2985 | No | Resolved |
Sauk: frequently asked questions
Is Sauk's water safe to drink?
Sauk 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 Sauk?
Sauk (PWSID IL0312790) is a local government-owned community water system, regulated by the IL state drinking water program.
How many people does Sauk serve?
Sauk reports serving 9,921 people through 3,200 service connections in Cook County, Illinois.
Where does Sauk get its water?
EPA SDWIS lists this system's primary water source as groundwater.
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 |