SD4600403 · South Dakota
DARLINGTON ESTATES
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 5
- EPA health-based flag
- 5
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 0
Counties listed by EPA · Pennington 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 1 resolved record with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 181 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 2600104 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad RuleNoncompliance period start January 1, 2026 · period end March 31, 2026 · first reported June 17, 2026 · EPA return-to-compliance field March 31, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600006 March 12, 2026 Informal State Public Notification requested 2600007 April 28, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 2600103 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad RuleNoncompliance period start January 1, 2026 · period end March 31, 2026 · first reported June 17, 2026 · EPA return-to-compliance field March 31, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600005 March 12, 2026 Informal State Public Notification requested EPA health-based flag · Resolved
Treatment Technique No Certif. OperatorViolation 2600102 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start November 12, 2025 · period end May 12, 2026 · first reported March 2, 2026 · EPA return-to-compliance field May 12, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600004 November 12, 2025 Informal State Violation/Reminder Notice 2600009 May 12, 2026 Resolving State Compliance achieved EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 2500101 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad RuleNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported August 27, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500002 December 12, 2025 Informal State Public Notification requested 2500008 January 6, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 2500100 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad RuleNoncompliance 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 2500001 October 17, 2025 Informal State Public Notification requested 2500003 December 2, 2025 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