Public water system record
Laddonia PWS
Serves an area of Audrain County, MO that includes Laddonia · 511 people served
Federal records show 2 health-based violations and 8 monitoring/reporting issues for Laddonia PWS in the last ten years. The most serious issue in this window was a resolved Stage 1 Disinfection Byproducts Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 8
Key facts
- Laddonia PWS draws water from 4 wells (2 of them for emergency, seasonal or other part-time use).
- Record on file since 1979, with 7 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 294 unknown out of 310 service lines.
Check whether Laddonia PWS 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 |
|---|---|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Mar 3, 2023 | Resolved | No |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Apr 29, 2021 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2025 | Active |
|
Groundwater Rule
Monitoring and reporting
|
Aug 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Public Notice
OTHER
|
Apr 16, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
Full record since 1979
EPA's records for Laddonia PWS go back to 1979. Before October 19, 2016 they list 7 health-based violations (1 resolved, 6 archived by EPA without a recorded fix) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 2 | 0 |
| 1980s | 4 | 0 |
| 2010 to October 18, 2016 | 1 | 4 |
| 2020s | 2 | 8 |
Most recent health-based violation before October 19, 2016: Stage 1 Disinfection Byproducts Rule, began October 2011, Resolved.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Oct 26, 2011 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 31, 1984 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 31, 1983 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 31, 1982 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 31, 1981 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 31, 1979 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 31, 1979 | Archived |
What the violations mean
Stage 1 Disinfection Byproducts Rule
2 incidentsThe system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule
Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk
Where the water comes from
Laddonia PWS draws water from 4 wells (2 of them for emergency, seasonal or other part-time use).
Annual water quality report
Laddonia PWS 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