Public water system record
Wilmington
Serves Wilmington, Will County, IL · 5,700 people served
Federal records show no health-based violations and 12 monitoring/reporting issues for Wilmington 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
- 12
Key facts
- Wilmington draws water from 1 well and 1 surface water intake (1 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: signed compliance agreement by Illinois, August 2004.
- Record on file since 1977, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 9 lead and 1,763 unknown out of 2,495 service lines.
Check whether Wilmington 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 | Active |
|
Chloramine
Monitoring and reporting
|
Feb 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2025 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2024 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 10, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2022 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
Full record since 1977
EPA's records for Wilmington go back to 1977. Before October 19, 2016 they list 8 health-based violations (5 resolved, 3 archived by EPA without a recorded fix) and 85 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 3 | 15 |
| 1990s | 5 | 31 |
| 2000s | 0 | 36 |
| 2010 to October 18, 2016 | 0 | 2 |
| 2020s | 0 | 12 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 1997, Archived.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1995 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 1995 | Archived |
|
Lead and Copper Rule
Treatment technique failure
|
Aug 1, 1994 | Resolved |
|
Lead and Copper Rule
Treatment technique failure
|
Jan 7, 1994 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 1989 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 9, 1985 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Mar 9, 1982 | Resolved |
Enforcement actions
Illinois regulators took 1 formal enforcement action against Wilmington in 2004. The most recent was a signed compliance agreement in August 2004.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 31, 2004 | Illinois | Signed compliance agreement | 1 violation: CARBON, TOTAL |
Where the water comes from
Wilmington draws water from 1 well and 1 surface water intake (1 of them for emergency, seasonal or other part-time use). 1 other community water system and 2 smaller public systems such as schools, businesses or campgrounds buy water from Wilmington.
Community systems that buy water from it
- Lakewood Shores Improvement Association Wilmington, IL
Annual water quality report
Wilmington 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