Public water system record
IL American-Dupage Utility
Serves an area of DuPage County, IL that includes Lisle · 6,613 people served
Federal records show no health-based violations and no monitoring or reporting issues for IL American-Dupage Utility 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
- 0
Key facts
- IL American-Dupage Utility buys its water from Lisle.
- Record on file since 1977, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,155 service lines.
Check whether IL American-Dupage Utility 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, and no monitoring or reporting violations either.
Full record since 1977
EPA's records for IL American-Dupage Utility go back to 1977. Before October 19, 2016 they list 3 health-based violations (1 resolved, 2 archived by EPA without a recorded fix) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1990s | 2 | 1 |
| 2000s | 1 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2007, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1998 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jul 1, 1998 | Archived |
Where the water comes from
IL American-Dupage Utility buys its water from Lisle. EPA also lists 1 well, all for emergency, seasonal or other part-time use.
Buys water from
- Lisle Lisle, IL
Annual water quality report
IL American-Dupage Utility 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