Public water system record
Des Plaines
Serves Des Plaines, Cook County, IL · 60,675 people served
Federal records show no health-based violations and 4 monitoring/reporting issues for Des Plaines 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
- 4
Key facts
- Des Plaines buys its water from Chicago.
- Record on file since 1977, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 11,542 lead out of 16,665 service lines.
Check whether Des Plaines 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 |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
Full record since 1977
EPA's records for Des Plaines 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 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 3 |
Where the water comes from
Des Plaines buys its water from Chicago. It lists no wells or intakes of its own. It also has an emergency connection to Northwest Water Commission. 2 other community water systems and 2 smaller public systems such as schools, businesses or campgrounds buy water from Des Plaines. 3 other public water systems have emergency connections to Des Plaines.
Buys water from
- Chicago Chicago, IL
Emergency or part-time connections to
- Northwest Water Commission Des Plaines, IL
Community systems that buy water from it
- Buckhorn Ranch Estates MHP Denver, CO
- IL American-Waycinden Godfrey, IL
Annual water quality report
Des Plaines 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