CALEDONIA, MO · Washington County
CALEDONIA PWS Water System
Consumer Confidence Report status
CALEDONIA PWS must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show 1 item for CALEDONIA PWS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.
System facts
- System ID (PWSID)
- MO4010003
- System type
- Community Water System
- Population served
- 130
- Service connections
- 68
- Ownership
- local government
- Water source
- groundwater (wells)
CALEDONIA PWS is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 130 people from groundwater.
As of August 1, 2026, its federal record holds 12 entries between 1993 and 2025, of which 1 remains open; none are health-based.
Of the 12, 6 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Consumer Confidence Rule, the Total Coliform Rules, and the Lead and Copper Rule.
Violation history
Notification, Known or Potential LSL
—LEAD AND COPPER RULE REVISIONS
July 2, 2025
UnaddressedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2024 – September 19, 2024
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
August 1, 2021 – August 31, 2021
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2014 – October 5, 2015
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2013 – October 5, 2015
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
November 1, 2009 – November 30, 2009
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
May 1, 2009 – May 31, 2009
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2003 – June 28, 2006
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2001 – June 28, 2006
ResolvedMonitoring, Regular
—Nitrate-Nitrite
January 1, 1997 – December 31, 1997
ResolvedInitial Tap Sampling for Pb and Cu
—Lead and Copper Rule
July 1, 1995 – June 30, 1995
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
September 1, 1993 – September 30, 1993
Archived
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 2, 2025 | Notification, Known or Potential LSL | LEAD AND COPPER RULE REVISIONS | — | Unaddressed |
| July 1, 2024 – September 19, 2024 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| August 1, 2021 – August 31, 2021 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| July 1, 2014 – October 5, 2015 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2013 – October 5, 2015 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| November 1, 2009 – November 30, 2009 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| May 1, 2009 – May 31, 2009 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2003 – June 28, 2006 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2001 – June 28, 2006 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 1997 – December 31, 1997 | Monitoring, Regular | Nitrate-Nitrite | — | Resolved |
| July 1, 1995 – June 30, 1995 | Initial Tap Sampling for Pb and Cu | Lead and Copper Rule | — | Resolved |
| September 1, 1993 – September 30, 1993 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Archived |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is CALEDONIA PWS required to publish a Consumer Confidence Report?
- Yes. CALEDONIA PWS is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CALEDONIA PWS’s next Consumer Confidence Report due?
- CALEDONIA PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CALEDONIA PWS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for CALEDONIA PWS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
ROBINSON III, JOHN
573-779-3492
CALEDONIA, MO 63631-0000