CALHOUN, MO · Henry County
CALHOUN PWS Water System
Consumer Confidence Report status
CALHOUN 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 no open violations for CALHOUN PWS.
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)
- MO1010123
- System type
- Community Water System
- Population served
- 324
- Service connections
- 163
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
CALHOUN PWS is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 324 people from surface water.
As of August 1, 2026, its federal record holds 6 entries between 2005 and 2026, all of which EPA lists as closed.
Of the 6, 3 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 Total Coliform Rules and the Stage 2 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
February 1, 2026 – February 28, 2026
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
June 1, 2019 – June 30, 2019
ResolvedMaximum Contaminant Level Violation, Average
Health-basedTTHM
April 1, 2016 – June 30, 2016
ResolvedMaximum Contaminant Level Violation, Average
Health-basedTTHM
October 1, 2015 – December 31, 2015
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 2009 – September 30, 2009
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| February 1, 2026 – February 28, 2026 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| June 1, 2019 – June 30, 2019 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| April 1, 2016 – June 30, 2016 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
| October 1, 2015 – December 31, 2015 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
| September 1, 2009 – September 30, 2009 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| August 1, 2005 – August 31, 2005 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is CALHOUN PWS required to publish a Consumer Confidence Report?
- Yes. CALHOUN 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 CALHOUN PWS’s next Consumer Confidence Report due?
- CALHOUN PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CALHOUN PWS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CALHOUN PWS.
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
FIELDS, CHARLES
660-694-3634
CALHOUN, MO 65323-0000