WY5600022 · Wyoming

GREYBULL, TOWN OF

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

Violation records shown: 12
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 12

Counties listed by EPA · Big Horn County, Wyoming

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

Violations and what followed

Among 6 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 1,095 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 1100975 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start October 1, 2025 · first reported March 2, 2026
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
Monitoring, RegularViolation 1100962 · Nitrate-Nitrite · Nitrate Rule
Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
50816 February 14, 2025 Resolving State Compliance achieved
Monitoring or reporting · Archived
Monitoring, RegularViolation 1100973 · Radium-228 · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1100972 · Radium-226 · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1100971 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1100970 · Combined Uranium · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1100969 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
Monitoring, RegularViolation 1100968 · Radium-228 · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
50817 September 22, 2025 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 1100967 · Radium-226 · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
50817 September 22, 2025 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 1100966 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
50817 September 22, 2025 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 1100965 · Combined Uranium · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
50817 September 22, 2025 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 1100964 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2022 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
50817 September 22, 2025 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
50816	February 14, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
50817	September 22, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
50817	September 22, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
50817	September 22, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
50817	September 22, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
50817	September 22, 2025	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