Public water system record
Clay County PWSD 4
Serves an area of Clay County, MO that includes Liberty · 1,032 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Clay County PWSD 4 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
- Clay County PWSD 4 buys its water from Liberty PWS.
- Record on file since 2008, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 290 unknown out of 434 service lines.
Check whether Clay County PWSD 4 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 2008
EPA's records for Clay County PWSD 4 go back to 2008. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 1 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2009, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2009 | Resolved |
Where the water comes from
Clay County PWSD 4 buys its water from Liberty PWS. It lists no wells or intakes of its own. 2 other community water systems buy water from Clay County PWSD 4.
Buys water from
- Liberty PWS Liberty, MO
Community systems that buy water from it
- Clay County PWSD 7 Excelsior Spring, MO
- Missouri City PWS Liberty, MO
Annual water quality report
Clay County PWSD 4 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 Missouri.
Certified drinking water labs by state EPA guidance for private wells