Public water system · IL0974340
ActiveDeerfield
Community water system in Lake County, Illinois, drawing primarily on purchased surface water.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
19,196
Service connections
6,281
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | 72 | 7000 | No | Unaddressed |
| 2025-01-01 | 27 | 2950 | No | Resolved |
| 2025-01-01 | 27 | 2456 | No | Resolved |
| 2023-07-10 | 72 | 7000 | No | Resolved |
| 2022-07-01 | 72 | 7000 | No | Resolved |
| 2019-07-01 | 71 | 7000 | No | Resolved |
| 2018-07-01 | 72 | 7000 | No | Resolved |
| 2014-07-01 | 72 | 7000 | No | Resolved |
| 2013-08-01 | 22 | 3100 | Yes | Resolved |
| 2013-08-01 | 21 | 3100 | Yes | Resolved |
| 2005-10-01 | 52 | 5000 | No | Resolved |
| 2005-04-01 | 43 | 0300 | Yes | Resolved |
Deerfield: frequently asked questions
Is Deerfield's water safe to drink?
Deerfield 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 Deerfield?
Deerfield (PWSID IL0974340) is a local government-owned community water system, regulated by the IL state drinking water program.
How many people does Deerfield serve?
Deerfield reports serving 19,196 people through 6,281 service connections in Lake County, Illinois.
Where does Deerfield get its water?
EPA SDWIS lists this system's primary water source as purchased surface water.
Other water systems in Lake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Indiana American Water - Northwest | Lake | 210,510 | Community | Surface water |
| Waukegan | Lake | 87,149 | Community | Surface water |
| Hammond Water Works Department | Lake | 78,384 | Community | Surface water |
| Lake County West Water Subdistrict | Lake | 78,379 | Community | Surface water |
| Aqua Ohio - Mentor | Lake | 74,500 | Community | Surface water |
| Leesburg, City of | Lake | 46,746 | Community | Groundwater |