Public water system record
South Wilmington
Serves South Wilmington, Grundy County, IL · 700 people served
Federal records show no health-based violations and 12 monitoring/reporting issues for South 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
- South Wilmington draws water from 3 wells.
- Most recent formal enforcement: signed compliance agreement by Illinois, March 2004.
- Record on file since 1977, with 20 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 127 unknown out of 334 service lines.
Check whether South 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 |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 | Active |
|
Combined Uranium
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
Full record since 1977
EPA's records for South Wilmington go back to 1977. Before October 19, 2016 they list 20 health-based violations (19 resolved, 1 archived by EPA without a recorded fix) and 6 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 1 | 0 |
| 1990s | 5 | 0 |
| 2000s | 13 | 1 |
| 2010 to October 18, 2016 | 1 | 4 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 10 |
Most recent health-based violation before October 19, 2016: Total Coliform, began April 2013, Resolved.
Show all 20 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2013 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Apr 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jan 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jul 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Apr 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jan 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2002 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Jan 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2001 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2000 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Dec 8, 1997 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Nov 1, 1996 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Jun 7, 1995 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 22, 1992 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Apr 16, 1984 | Resolved |
Enforcement actions
Illinois regulators took 2 formal enforcement actions against South Wilmington between 2001 and 2004. The most recent was a signed compliance agreement in March 2004.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 19, 2004 | Illinois | Signed compliance agreement | 16 violations (16 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U |
| Oct 12, 2001 | Illinois | Signed compliance agreement | 8 violations (8 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U |
Where the water comes from
South Wilmington draws water from 3 wells.
Annual water quality report
South 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