Public water system record
Williamsfield
Serves Williamsfield, Knox County, IL · 575 people served
Federal records show 1 health-based violation and 1 monitoring/reporting issue for Williamsfield in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- Williamsfield draws water from 2 wells.
- Most recent formal enforcement: signed compliance agreement by Illinois, July 2006.
- Record on file since 1977, with 4 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 336 service lines.
Check whether Williamsfield 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Full record since 1977
EPA's records for Williamsfield go back to 1977. Before October 19, 2016 they list 4 health-based violations (1 resolved, 3 archived by EPA without a recorded fix) and 26 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 2 | 0 |
| 1990s | 2 | 21 |
| 2000s | 0 | 4 |
| 2020s | 1 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began December 1998, Archived.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1998 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1998 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Jul 1, 1985 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Jul 1, 1982 | Archived |
Enforcement actions
Illinois regulators took 2 formal enforcement actions against Williamsfield between 2004 and 2006. The most recent was a signed compliance agreement in July 2006.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 26, 2006 | Illinois | Signed compliance agreement | 2 violations: Public Notice |
| Oct 21, 2004 | Illinois | Signed compliance agreement | 1 violation: Consumer Confidence Rule |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Williamsfield draws water from 2 wells.
Annual water quality report
Williamsfield 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