Public water system record
Hanover Park
Serves Hanover Park, Cook County and DuPage County, IL · 37,470 people served
Federal records show no health-based violations and 8 monitoring/reporting issues for Hanover Park 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
- 8
Key facts
- Hanover Park buys its water from Northwest Suburban Municipal Jawa.
- Record on file since 1977, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,096 service lines.
Check whether Hanover Park 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 |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
LASSO
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
Full record since 1977
EPA's records for Hanover Park go back to 1977. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 29 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 1 | 0 |
| 1990s | 1 | 10 |
| 2000s | 1 | 12 |
| 2010 to October 18, 2016 | 0 | 6 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2009, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1998 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 14, 1984 | Resolved |
Where the water comes from
Hanover Park buys its water from Northwest Suburban Municipal Jawa. EPA also lists 4 wells, all for emergency, seasonal or other part-time use. It also has emergency connections to Bartlett, Streamwood, Carol Stream and Roselle. 2 smaller public systems such as schools, businesses or campgrounds buy water from Hanover Park. 1 other public water system has an emergency connection to Hanover Park.
Buys water from
- Northwest Suburban Municipal Jawa Elk Grove Village, IL
Emergency or part-time connections to
- Bartlett Bartlett, IL
- Streamwood Streamwood, IL
- Carol Stream Carol Stream, IL
- Roselle Roselle, IL
Annual water quality report
Hanover Park 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