SD4602352 · South Dakota
RED WILLOW COLONY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 21
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 21
Counties listed by EPA · Brookings 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 21 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 364 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100124 · Toluene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100032 January 18, 2022 Informal State Public Notification requested 2100053 February 14, 2022 Informal State Public Notification received 2100074 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100123 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100031 January 18, 2022 Informal State Public Notification requested 2100052 February 14, 2022 Informal State Public Notification received 2100073 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100122 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100030 January 18, 2022 Informal State Public Notification requested 2100051 February 14, 2022 Informal State Public Notification received 2100072 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100121 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100029 January 18, 2022 Informal State Public Notification requested 2100050 February 14, 2022 Informal State Public Notification received 2100071 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100120 · Benzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100028 January 18, 2022 Informal State Public Notification requested 2100049 February 14, 2022 Informal State Public Notification received 2100070 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100119 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100027 January 18, 2022 Informal State Public Notification requested 2100048 February 14, 2022 Informal State Public Notification received 2100069 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100118 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100026 January 18, 2022 Informal State Public Notification requested 2100047 February 14, 2022 Informal State Public Notification received 2100068 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100117 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100025 January 18, 2022 Informal State Public Notification requested 2100046 February 14, 2022 Informal State Public Notification received 2100067 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100116 · Styrene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100024 January 18, 2022 Informal State Public Notification requested 2100045 February 14, 2022 Informal State Public Notification received 2100066 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100115 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100023 January 18, 2022 Informal State Public Notification requested 2100044 February 14, 2022 Informal State Public Notification received 2100065 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100114 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100022 January 18, 2022 Informal State Public Notification requested 2100043 February 14, 2022 Informal State Public Notification received 2100064 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100113 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100021 January 18, 2022 Informal State Public Notification requested 2100042 February 14, 2022 Informal State Public Notification received 2100063 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100112 · Xylenes, Total · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100020 January 18, 2022 Informal State Public Notification requested 2100041 February 14, 2022 Informal State Public Notification received 2100062 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100111 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100019 January 18, 2022 Informal State Public Notification requested 2100040 February 14, 2022 Informal State Public Notification received 2100061 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100110 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100018 January 18, 2022 Informal State Public Notification requested 2100039 February 14, 2022 Informal State Public Notification received 2100060 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100109 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100017 January 18, 2022 Informal State Public Notification requested 2100038 February 14, 2022 Informal State Public Notification received 2100059 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100108 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100016 January 18, 2022 Informal State Public Notification requested 2100037 February 14, 2022 Informal State Public Notification received 2100058 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100107 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100015 January 18, 2022 Informal State Public Notification requested 2100036 February 14, 2022 Informal State Public Notification received 2100057 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100106 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100014 January 18, 2022 Informal State Public Notification requested 2100035 February 14, 2022 Informal State Public Notification received 2100056 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100105 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100013 January 18, 2022 Informal State Public Notification requested 2100034 February 14, 2022 Informal State Public Notification received 2100055 February 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100104 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 28, 2022 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100012 January 18, 2022 Informal State Public Notification requested 2100033 February 14, 2022 Informal State Public Notification received 2100054 February 21, 2022 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