Public water system record
Mission Brook SD
Serves an area of Cook County, IL that includes Glenview · 2,852 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Mission Brook SD in the last ten years. At least one of these issues remains unresolved.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Mission Brook SD buys its water from Northbrook.
- Most recent enforcement action: ban on new connections or service extensions by Illinois, March 1991.
- Record on file since 1977, with 6 health-based violations before October 19, 2016.
Check whether Mission Brook SD serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Jul 2, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
Full record since 1977
EPA's records for Mission Brook SD go back to 1977. Before October 19, 2016 they list 6 health-based violations (5 resolved, 1 archived by EPA without a recorded fix) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 4 | 0 |
| 1990s | 2 | 1 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began December 1994, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Dec 1, 1994 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Dec 21, 1990 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 1, 1988 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Feb 1, 1985 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 14, 1984 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Feb 2, 1981 | Archived |
Enforcement actions
Illinois regulators issued 1 ban on new connections to Mission Brook SD in 1991. The most recent was a ban on new connections or service extensions in March 1991.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 14, 1991 | Illinois | Ban on new connections or service extensions | 1 violation (1 health-based): Combined Radium (-226 and -228) |
Where the water comes from
Mission Brook SD buys its water from Northbrook. It lists no wells or intakes of its own.
Buys water from
- Northbrook Northbrook, IL
Annual water quality report
Mission Brook SD must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Illinois.
Certified drinking water labs by state EPA guidance for private wells