Northbrook Water Quality
Illinois
The tap water in Northbrook, Illinois is served by 12 EPA-regulated water systems covering approximately 45,899 people. 6 health-based violations are on record, most recently for 5000 in 2024. Data source: EPA Safe Drinking Water Information System.
Drinking water in Northbrook, Illinois is delivered through 12 EPA-regulated community water systems serving an estimated 45,899 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Northbrook shows 6 total violations across all 12 systems, of which 6 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 5000, 0400, 3100. 3 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Illinois drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| NORTHBROOK | 34,407 | 1 | Health |
| OASIS MHP | 3,000 | 0 | Clean |
| MISSION BROOK SD | 2,852 | 0 | Clean |
| SUNSET MHP | 1,400 | 0 | Clean |
| OAKBROOK ESTATES MHP | 1,012 | 0 | Clean |
| HARBOR POINT ESTATES MHP | 950 | 0 | Clean |
| CAMBRIDGE COURTS MHP | 658 | 0 | Clean |
| HARVEST VIEW MHC | 400 | 0 | Clean |
| CEDAR HAVEN MHC | 395 | 1 | Health |
| WHISPERING LAKES WATER SYSTEM, INC. | 375 | 0 | Clean |
| BROOKSIDE MEADOWS MHP | 250 | 0 | Clean |
| ROARING FORK MHP | 200 | 4 | Health |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 5000 | 2024-04-01 |
| 0400 | 2020-08-01 |
| 0400 | 2020-08-01 |
| 3100 | 2016-01-01 |
| 3100 | 2016-01-01 |
| 5000 | 1993-01-01 |
TRI Facilities in Northbrook
| Facility | Total Releases |
|---|---|
| Ramcel Precision Stamping & Manufacturing LLC | 63.2K lbs |
| Acme Alliance LLC | 81 lbs |
| Panek Precision | 0 lbs |
Frequently Asked Questions
Is Northbrook, Illinois water safe to drink? ▼
How many water violations does Northbrook have? ▼
What contaminants were found in Northbrook water? ▼
How many water systems serve Northbrook? ▼
Where does Northbrook get its drinking water? ▼
Are there pollution sources near Northbrook? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.