Public water system record
City of Williamston
Serves Williamston, Ingham County, MI · 3,917 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for City of Williamston 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
- 2
Key facts
- City of Williamston draws water from 5 wells.
- Most recent formal enforcement: administrative penalty by Michigan, December 2005.
- Record on file since 2005, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,419 service lines.
Check whether City of Williamston 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 |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
Full record since 2005
EPA's records for City of Williamston go back to 2005. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 2 |
| October 19, 2016 to 2019 | 0 | 2 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began July 2008, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jul 1, 2008 | Resolved |
Enforcement actions
Michigan regulators took 1 formal enforcement action against City of Williamston in 2005. The most recent was an administrative penalty in December 2005.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 15, 2005 | Michigan | Administrative penalty | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
Where the water comes from
City of Williamston draws water from 5 wells.
Annual water quality report
City of Williamston 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 Michigan.
Certified drinking water labs by state EPA guidance for private wells