Public water system record
Maryville
Serves Maryville, Madison County, IL · 10,150 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Maryville 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
- 1
Key facts
- Maryville draws water from 4 wells.
- Record on file since 1977, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 4,456 service lines.
Check whether Maryville 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 |
Full record since 1977
EPA's records for Maryville go back to 1977. Before October 19, 2016 they list 2 health-based violations (2 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 |
| 1990s | 2 | 0 |
| 2000s | 0 | 5 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began December 1995, Archived.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1995 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Dec 1, 1995 | Archived |
Where the water comes from
Maryville draws water from 4 wells. 1 other public water system has an emergency connection to Maryville.
Annual water quality report
Maryville 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