Public water system record
Seneca
Serves Seneca, LaSalle County, IL · 2,353 people served
Federal records show no health-based violations and no monitoring or reporting issues for Seneca in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Seneca draws water from 2 wells.
- Most recent formal enforcement: signed compliance agreement by Illinois, April 2005.
- Record on file since 1977, with 10 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 990 service lines.
Check whether Seneca 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, and no monitoring or reporting violations either.
Full record since 1977
EPA's records for Seneca go back to 1977. Before October 19, 2016 they list 10 health-based violations (9 resolved, 1 archived by EPA without a recorded fix) and 8 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 2 | 0 |
| 1990s | 2 | 3 |
| 2000s | 6 | 2 |
| 2010 to October 18, 2016 | 0 | 2 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began October 2005, Resolved.
Show all 10 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Apr 1, 2005 | 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
|
Sep 7, 2000 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Aug 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1992 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Aug 1, 1989 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Aug 23, 1985 | Resolved |
Enforcement actions
Illinois regulators took 2 formal enforcement actions against Seneca between 1991 and 2005. The most recent was a signed compliance agreement in April 2005.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 14, 2005 | Illinois | Signed compliance agreement | 5 violations (5 health-based): Combined Radium (-226 and -228) |
| Jan 24, 1991 | Illinois | Compliance order (no penalty) | 1 violation (1 health-based): Combined Radium (-226 and -228) |
Where the water comes from
Seneca draws water from 2 wells. 1 smaller public system such as schools, businesses or campgrounds buys water from Seneca.
Annual water quality report
Seneca 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