SD4602267 · South Dakota
SHAMROCK COLONY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 10
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 9
Counties listed by EPA · Clark 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 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500193 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2025 · period end August 31, 2025 · first reported December 9, 2025 · EPA return-to-compliance field August 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500230 August 1, 2025 Informal State Public Notification requested 2500235 October 1, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2500194 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end April 30, 2026 · first reported December 9, 2025 · EPA return-to-compliance field April 30, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500231 August 8, 2025 Informal State Violation/Reminder Notice 2500236 April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500192 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 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 2500229 July 10, 2025 Informal State Public Notification requested 2500234 August 1, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500191 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance 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 2500226 April 8, 2025 Informal State Public Notification requested 2500228 May 1, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500190 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance 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 2500222 November 8, 2024 Informal State Public Notification requested 2500233 November 13, 2024 Informal State Public Notification received 2500227 December 1, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2400189 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2024 · period end January 31, 2024 · first reported May 16, 2024 · EPA return-to-compliance field January 31, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400221 February 12, 2024 Informal State Public Notification requested 2400232 February 15, 2024 Informal State Public Notification received 2400224 December 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2400188 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2023 · period end December 31, 2023 · first reported February 22, 2024 · EPA return-to-compliance field December 31, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400220 January 9, 2024 Informal State Public Notification requested 2400225 January 10, 2024 Informal State Public Notification received 2400223 December 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2200187 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance 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 2200214 November 1, 2021 Informal State Public Notification requested 2200216 December 1, 2021 Resolving State Compliance achieved 2200219 December 17, 2021 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2100186 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 1, 2021 · period end September 30, 2021 · first reported November 15, 2021 · EPA return-to-compliance field September 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100213 October 6, 2021 Informal State Public Notification requested 2100215 December 1, 2021 Resolving State Compliance achieved 2100218 December 17, 2021 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2100185 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2021 · period end January 31, 2021 · first reported April 26, 2021 · EPA return-to-compliance field January 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100210 February 3, 2021 Informal State Public Notification requested 2100212 March 1, 2021 Resolving State Compliance achieved 2100217 December 17, 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