Public water system record
Darien
Serves Darien, DuPage County, IL · 21,751 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Darien 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
- 1
Key facts
- Darien buys its water from Du Page Water Commission.
- Record on file since 1977, with 0 health-based violations before October 19, 2016.
Check whether Darien 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 |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
Full record since 1977
EPA's records for Darien go back to 1977. Before October 19, 2016 they list no health-based violations and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 2020s | 0 | 1 |
Where the water comes from
Darien buys its water from Du Page Water Commission. It lists no wells or intakes of its own. 1 other community water system and 2 smaller public systems such as schools, businesses or campgrounds buy water from Darien.
Buys water from
- Du Page Water Commission Elmhurst, IL
Community systems that buy water from it
- Southeast Regional Water Facility Darien, IL
Annual water quality report
Darien 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