MO1010123 · Missouri

CALHOUN PWS

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 2
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 2

Counties listed by EPA · Henry County, Missouri

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 2 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 28 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9100913 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2026 · period end February 28, 2026 · first reported June 16, 2026 · EPA return-to-compliance field February 28, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
732	March 9, 2026	Resolving	State Compliance achieved
729	March 26, 2026	Informal	State Violation/Reminder Notice
730	March 26, 2026	Informal	State Public Notification requested
731	May 18, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9100912 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2019 · period end June 30, 2019 · first reported March 28, 2022 · EPA return-to-compliance field June 30, 2019

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
725	July 31, 2019	Informal	State Violation/Reminder Notice
726	July 31, 2019	Informal	State Public Notification requested
727	January 10, 2020	Resolving	State Compliance achieved
728	June 2, 2020	Informal	State Public Notification received

EPA data and scope

How to read the records

The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.

We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility