OK2003201 · Oklahoma
CALVIN
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 7
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
Counties listed by EPA · Hughes County, Oklahoma
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 90 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 8006832 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end May 17, 2025 · first reported November 14, 2025 · EPA return-to-compliance field May 17, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9174399 May 17, 2025 Resolving State Compliance achieved 9174400 August 19, 2025 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 8006828 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2023 · period end July 2, 2024 · first reported February 14, 2024 · EPA return-to-compliance field July 2, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9174396 January 18, 2024 Informal State Violation/Reminder Notice 9174398 July 2, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 8006805 · Gross Beta Particle Activity · Radionuclides and Revised Rad RuleNoncompliance period start April 1, 2021 · period end June 30, 2021 · first reported September 8, 2021 · EPA return-to-compliance field June 30, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9174383 August 13, 2021 Informal State Violation/Reminder Notice 9174384 August 13, 2021 Informal State Public Notification requested 9174386 March 2, 2022 Resolving State Compliance achieved 9174392 April 4, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 8006804 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad RuleNoncompliance period start April 1, 2021 · period end June 30, 2021 · first reported September 8, 2021 · EPA return-to-compliance field June 30, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9174383 August 13, 2021 Informal State Violation/Reminder Notice 9174384 August 13, 2021 Informal State Public Notification requested 9174386 March 2, 2022 Resolving State Compliance achieved 9174393 April 4, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 8006803 · Combined Uranium · Radionuclides and Revised Rad RuleNoncompliance period start April 1, 2021 · period end June 30, 2021 · first reported September 8, 2021 · EPA return-to-compliance field June 30, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9174383 August 13, 2021 Informal State Violation/Reminder Notice 9174384 August 13, 2021 Informal State Public Notification requested 9174386 March 2, 2022 Resolving State Compliance achieved 9174394 April 4, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 8006802 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad RuleNoncompliance period start April 1, 2021 · period end June 30, 2021 · first reported September 8, 2021 · EPA return-to-compliance field June 30, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9174383 August 13, 2021 Informal State Violation/Reminder Notice 9174384 August 13, 2021 Informal State Public Notification requested 9174386 March 2, 2022 Resolving State Compliance achieved 9174395 April 4, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 8006768 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2020 · period end December 31, 2020 · first reported March 1, 2021 · EPA return-to-compliance field December 31, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9174380 February 12, 2021 Informal State Violation/Reminder Notice 9174381 February 12, 2021 Informal State Public Notification requested 9174382 April 15, 2021 Informal State Public Notification received 9174385 August 13, 2021 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