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SD4600331 · South Dakota

TOLSTOY

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

Violation records shown: 9
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 8

Counties listed by EPA · Potter County, South Dakota

Open the EPA system record

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

Violations and what followed

Among 9 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.

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2400196 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start March 9, 2024 · period end April 9, 2024 · first reported November 21, 2024 · EPA return-to-compliance field April 9, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2400198 April 9, 2024 Resolving State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2300194 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2023 · period end June 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field June 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300188	July 11, 2023	Informal	State Public Notification requested
2300192	August 1, 2023	Resolving	State Compliance achieved
2300197	May 6, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2300195 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field June 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300189	July 11, 2023	Informal	State Public Notification requested
2300199	June 16, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2300192 · 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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300184	March 10, 2023	Informal	State Public Notification requested
2300187	May 17, 2023	Resolving	State Compliance achieved
2300195	April 9, 2024	Informal	State Public Notification issued
2300196	April 9, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2300193 · 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
2300185	March 10, 2023	Informal	State Public Notification requested
2300191	July 23, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2200191 · 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
2200182	August 9, 2022	Informal	State Public Notification requested
2200190	July 23, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2200190 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2022 · period end July 31, 2022 · first reported December 21, 2022 · EPA return-to-compliance field July 31, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200181	August 9, 2022	Informal	State Public Notification requested
2200186	May 17, 2023	Resolving	State Compliance achieved
2200194	June 27, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2200189 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200179	May 12, 2022	Informal	State Public Notification requested
2200180	June 1, 2022	Resolving	State Compliance achieved
2200193	June 27, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2200188 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2021 · period end October 31, 2021 · first reported February 9, 2022 · EPA return-to-compliance field October 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200177	November 1, 2021	Informal	State Public Notification requested
2200178	December 1, 2021	Resolving	State Compliance achieved
2200183	June 23, 2022	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