No open health-based violations on EPA record in the last 10 years.
Serves about 536 people (260 connections) with surface water bought from Gillespie and Mount Clare.
From EPA's record for IL1171200. PurityMap is independent of Wilsonville.
Are you this utility? Correct this listing →
1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2026 | Long Term 2 Enhanced Surface Water Treatment Rule | – | – | Archived |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Wilsonville's phone number on EPA record is 217-835-4413. Its mailing address is 99 WILSON STREET, P.O. Box 404, WILSONVILLE, IL 62093.
According to EPA's record, Wilsonville uses surface water bought from Gillespie and Mount Clare.
EPA's record shows 1 health-based violation for Wilsonville in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 6 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Wilsonville's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Wilsonville. Its phone number on EPA record is 217-835-4413. Its mailing address on EPA record is 99 WILSON STREET, P.O. Box 404, WILSONVILLE, IL 62093. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.