SD4600153 · South Dakota

HENRY

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

Violation records shown: 20
EPA health-based flag: 2
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 18

Counties listed by EPA · Codington 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 20 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2500126 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported December 9, 2025 · EPA return-to-compliance field September 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500059	October 31, 2025	Informal	State Public Notification requested
2500066	July 1, 2026	Resolving	State Compliance achieved

EPA health-based flag · Resolved
Treatment Technique No Certif. OperatorViolation 2500125 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start May 15, 2025 · period end January 20, 2026 · first reported December 9, 2025 · EPA return-to-compliance field January 20, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500056 May 15, 2025 Informal State Violation/Reminder Notice
2500067 January 20, 2026 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500123 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start May 1, 2025 · period end May 31, 2025 · first reported September 4, 2025 · EPA return-to-compliance field May 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500046 June 10, 2025 Informal State Public Notification requested
2500055 July 1, 2025 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 2500124 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported September 4, 2025 · EPA return-to-compliance field June 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500047 July 28, 2025 Informal State Public Notification requested
2500065 July 1, 2026 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500122 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start April 1, 2025 · period end April 30, 2025 · first reported June 16, 2025 · EPA return-to-compliance field April 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500042 April 1, 2025 Informal State Public Notification requested
2500054 July 1, 2025 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500121 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start March 1, 2025 · period end March 31, 2025 · first reported June 16, 2025 · EPA return-to-compliance field March 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500041 April 8, 2025 Informal State Public Notification requested
2500053 July 1, 2025 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500056	May 15, 2025	Informal	State Violation/Reminder Notice
2500067	January 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500046	June 10, 2025	Informal	State Public Notification requested
2500055	July 1, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500047	July 28, 2025	Informal	State Public Notification requested
2500065	July 1, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500042	April 1, 2025	Informal	State Public Notification requested
2500054	July 1, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500041	April 8, 2025	Informal	State Public Notification requested
2500053	July 1, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2500120 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2025 · period end February 28, 2025 · first reported June 16, 2025 · EPA return-to-compliance field February 28, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500040	March 11, 2025	Informal	State Public Notification requested
2500052	July 1, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2500119 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2025 · period end January 31, 2025 · first reported March 31, 2025 · EPA return-to-compliance field January 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500039	February 5, 2025	Informal	State Public Notification requested
2500051	July 1, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2500118 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2024 · period end December 31, 2024 · first reported March 31, 2025 · EPA return-to-compliance field December 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500038	January 10, 2025	Informal	State Public Notification requested
2500064	February 12, 2025	Informal	State Public Notification received
2500050	July 1, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2500117 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2024 · period end November 30, 2024 · first reported March 31, 2025 · EPA return-to-compliance field November 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500037	December 9, 2024	Informal	State Public Notification requested
2500063	December 16, 2024	Informal	State Public Notification received
2500049	July 1, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2500116 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2024 · period end October 31, 2024 · first reported March 31, 2025 · EPA return-to-compliance field October 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500032	November 8, 2024	Informal	State Public Notification requested
2500062	November 20, 2024	Informal	State Public Notification received
2500048	July 1, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 2500115 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2024 · period end September 30, 2025 · first reported March 31, 2025 · EPA return-to-compliance field September 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500031	November 4, 2024	Informal	State Public Notification requested
2500058	September 30, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2400114 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2024 · period end August 31, 2024 · first reported November 21, 2024 · EPA return-to-compliance field August 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400030	September 6, 2024	Informal	State Public Notification requested
2400061	September 12, 2024	Informal	State Public Notification received
2400035	December 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2400112 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400028	June 1, 2024	Informal	State Public Notification requested
2400060	July 16, 2024	Informal	State Public Notification received
2400034	December 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2400113 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

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

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400029	July 24, 2024	Informal	State Public Notification requested
2400045	June 16, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2400111 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported May 16, 2024 · EPA return-to-compliance field March 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400027	April 29, 2024	Informal	State Public Notification requested
2400044	June 16, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 2400110 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2023 · period end September 30, 2025 · first reported February 22, 2024 · EPA return-to-compliance field September 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400026	January 22, 2024	Informal	State Public Notification requested
2400057	September 30, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2400109 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2023 · period end October 31, 2023 · first reported February 22, 2024 · EPA return-to-compliance field October 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400025	November 7, 2023	Informal	State Public Notification requested
2400036	December 1, 2023	Informal	State Public Notification received
2400033	December 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2300108 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported February 22, 2024 · EPA return-to-compliance field September 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300024	November 3, 2023	Informal	State Public Notification requested
2300043	June 16, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 1800104 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start February 1, 2018 · period end March 25, 2021 · first reported May 1, 2018 · EPA return-to-compliance field March 25, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1800012	April 5, 2018	Informal	State Violation/Reminder Notice
1800019	January 28, 2020	Formal	State Administrative/Compliance Order without penalty issued
1800021	March 25, 2021	Resolving	State Compliance achieved

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