OK2004105 · Oklahoma
LINCOLN CO RW & SEWER DIST 4
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 14
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 12
Counties listed by EPA · Lincoln 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 8 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 251.5 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 28035 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end August 20, 2025 · first reported November 14, 2025 · EPA return-to-compliance field August 20, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1378 August 19, 2025 Informal State Violation/Reminder Notice 1374 August 20, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 28024 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2023 · period end January 15, 2024 · first reported February 14, 2024 · EPA return-to-compliance field January 15, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1363 January 15, 2024 Resolving State Compliance achieved 1362 January 18, 2024 Informal State Violation/Reminder Notice Monitoring or reporting · Archived
Monitoring, RegularViolation 28040 · Nitrite · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1376 February 19, 2026 Informal State Violation/Reminder Notice 1377 February 19, 2026 Informal State Public Notification requested 1379 June 23, 2026 Informal State Public Notification received Monitoring or reporting · Archived
Monitoring, RegularViolation 28039 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1376 February 19, 2026 Informal State Violation/Reminder Notice 1377 February 19, 2026 Informal State Public Notification requested 1379 June 23, 2026 Informal State Public Notification received Monitoring or reporting · Archived
Monitoring, RegularViolation 28038 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1376 February 19, 2026 Informal State Violation/Reminder Notice 1377 February 19, 2026 Informal State Public Notification requested 1379 June 23, 2026 Informal State Public Notification received Monitoring or reporting · Archived
Monitoring, RegularViolation 28037 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1376 February 19, 2026 Informal State Violation/Reminder Notice 1377 February 19, 2026 Informal State Public Notification requested 1379 June 23, 2026 Informal State Public Notification received Monitoring or reporting · Archived
Monitoring, RegularViolation 28036 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1376 February 19, 2026 Informal State Violation/Reminder Notice 1377 February 19, 2026 Informal State Public Notification requested 1379 June 23, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 28028 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1364 February 28, 2024 Informal State Violation/Reminder Notice 1365 February 28, 2024 Informal State Public Notification requested 1369 April 5, 2024 Resolving State Compliance achieved 1370 June 26, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 28027 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1364 February 28, 2024 Informal State Violation/Reminder Notice 1365 February 28, 2024 Informal State Public Notification requested 1368 April 5, 2024 Resolving State Compliance achieved 1370 June 26, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 28026 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1364 February 28, 2024 Informal State Violation/Reminder Notice 1365 February 28, 2024 Informal State Public Notification requested 1367 April 5, 2024 Resolving State Compliance achieved 1370 June 26, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 28025 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1364 February 28, 2024 Informal State Violation/Reminder Notice 1365 February 28, 2024 Informal State Public Notification requested 1366 April 5, 2024 Resolving State Compliance achieved 1370 June 26, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 28020 · E. COLI · Ground Water RuleNoncompliance period start October 19, 2021 · period end March 7, 2022 · first reported February 17, 2022 · EPA return-to-compliance field March 7, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1351 December 28, 2021 Informal State Violation/Reminder Notice 1352 December 28, 2021 Informal State Public Notification requested 1355 March 7, 2022 Resolving State Compliance achieved 1361 April 4, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 28019 · E. COLI · Ground Water RuleNoncompliance period start September 9, 2021 · period end November 16, 2021 · first reported November 16, 2021 · EPA return-to-compliance field November 16, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1348 October 20, 2021 Informal State Violation/Reminder Notice 1349 October 20, 2021 Informal State Public Notification requested 1350 November 16, 2021 Resolving State Compliance achieved 1360 April 4, 2023 Informal State Public Notification received Monitoring or reporting · Archived
Monitoring, RegularViolation 28021 · Nitrite · Nitrate RuleNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported March 27, 2023 · EPA return-to-compliance field December 31, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1356 March 14, 2023 Informal State Violation/Reminder Notice 1357 March 14, 2023 Informal State Public Notification requested 1371 June 26, 2024 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