Public water system record
Buffalo Grove
Serves Buffalo Grove, Cook County and Lake County, IL · 43,212 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Buffalo Grove in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Buffalo Grove buys its water from Northwest Water Commission.
- Record on file since 1977, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 12,148 service lines.
Check whether Buffalo Grove 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 |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
Full record since 1977
EPA's records for Buffalo Grove go back to 1977. Before October 19, 2016 they list 1 health-based violation (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 |
| 1990s | 1 | 1 |
| 2020s | 0 | 3 |
Most recent health-based violation before October 19, 2016: Total Coliform, began June 1996, Archived.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1996 | Archived |
Where the water comes from
Buffalo Grove buys its water from Northwest Water Commission. EPA also lists 4 wells, all for emergency, seasonal or other part-time use. It also has emergency connections to Arlington Heights and LCPW - Pekara Subdivision. 1 other community water system and 2 smaller public systems such as schools, businesses or campgrounds buy water from Buffalo Grove. 2 other public water systems have emergency connections to Buffalo Grove.
Buys water from
- Northwest Water Commission Des Plaines, IL
Emergency or part-time connections to
- Arlington Heights Arlington Heights, IL
- LCPW - Pekara Subdivision Libertyville, IL
Community systems that buy water from it
- LCPW - Pekara Subdivision Libertyville, IL
Annual water quality report
Buffalo Grove 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.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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