Public water system record
Wilsonville
Serves Wilsonville, Macoupin County, IL · 536 people served
Federal records show no health-based violations and 6 monitoring/reporting issues for Wilsonville 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
- 6
Key facts
- Wilsonville buys its water from Gillespie.
- Record on file since 1991, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 49 lead and 79 unknown out of 265 service lines.
Check whether Wilsonville 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, 2025 | Active |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
Full record since 1991
EPA's records for Wilsonville go back to 1991. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 18 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 6 | 13 |
| 2000s | 0 | 3 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 5 |
Most recent health-based violation before October 19, 2016: Atrazine, began July 1997, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Atrazine
Contaminant limit exceeded
|
Jul 1, 1997 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Apr 1, 1997 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Jan 1, 1997 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Jul 1, 1996 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Apr 1, 1996 | Resolved |
Where the water comes from
Wilsonville buys its water from Gillespie. It lists no wells or intakes of its own. It also has an emergency connection to Mount Clare.
Buys water from
- Gillespie Gillespie, IL
Emergency or part-time connections to
- Mount Clare Gillespie, IL
Annual water quality report
Wilsonville 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