SD4600218 · South Dakota

MORRISTOWN

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

Violation records shown: 10
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 9

Counties listed by EPA · Corson County, South Dakota

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

Violations and what followed

Among 10 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 59 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2400253 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2024 · period end September 30, 2024 · first reported November 21, 2024 · EPA return-to-compliance field September 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400347	October 9, 2024	Informal	State Public Notification requested
2400349	December 19, 2024	Resolving	State Compliance achieved
2400352	July 1, 2025	Informal	State Public Notification received

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 2400254 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start May 21, 2024 · period end October 30, 2025 · first reported December 9, 2025 · EPA return-to-compliance field October 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400350	August 29, 2024	Informal	State Violation/Reminder Notice
2400351	October 30, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2400252 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2024 · period end April 30, 2024 · first reported August 22, 2024 · EPA return-to-compliance field April 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400345	May 7, 2024	Informal	State Public Notification requested
2400346	June 18, 2024	Informal	State Intentional no-action
2400348	December 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2300250 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2023 · period end February 28, 2023 · first reported May 22, 2023 · EPA return-to-compliance field February 28, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300337	March 10, 2023	Informal	State Public Notification requested
2300340	May 17, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2300251 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 22, 2023 · EPA return-to-compliance field March 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300338	March 10, 2023	Informal	State Public Notification requested
2300344	July 11, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2200248 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2022 · period end September 30, 2022 · first reported December 21, 2022 · EPA return-to-compliance field September 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200334	October 5, 2022	Informal	State Public Notification requested
2200339	May 17, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2200249 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported December 21, 2022 · EPA return-to-compliance field September 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200335	October 5, 2022	Informal	State Public Notification requested
2200343	July 11, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2200247 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported December 21, 2022 · EPA return-to-compliance field June 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200333	July 22, 2022	Informal	State Public Notification requested
2200342	July 11, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2100246 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported October 26, 2021 · EPA return-to-compliance field June 30, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2100331	May 10, 2021	Informal	State Public Notification requested
2100332	May 21, 2021	Informal	State Public Notification received
2100341	July 11, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2100245 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2021 · period end April 1, 2021 · first reported August 3, 2021 · EPA return-to-compliance field April 1, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2100330	April 1, 2021	Resolving	State Compliance achieved
2100329	May 10, 2021	Informal	State Public Notification requested
2100336	May 21, 2021	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