OK2006759 · Oklahoma

STONEBROOK UTILITY COMPANY

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

Violation records shown: 27
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 26

Counties listed by EPA · Seminole 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 22 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Archived

Monitoring, RegularViolation 135 · Gross Beta Particle Activity · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported August 11, 2026 · EPA return-to-compliance field March 31, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
43	May 18, 2026	Informal	State Violation/Reminder Notice
44	May 18, 2026	Informal	State Public Notification requested
45	May 18, 2026	Informal	State Violation/Reminder Notice
46	May 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 134 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported August 11, 2026 · EPA return-to-compliance field March 31, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
43	May 18, 2026	Informal	State Violation/Reminder Notice
44	May 18, 2026	Informal	State Public Notification requested
45	May 18, 2026	Informal	State Violation/Reminder Notice
46	May 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 133 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported August 11, 2026 · EPA return-to-compliance field March 31, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
43	May 18, 2026	Informal	State Violation/Reminder Notice
44	May 18, 2026	Informal	State Public Notification requested
45	May 18, 2026	Informal	State Violation/Reminder Notice
46	May 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 132 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported August 11, 2026 · EPA return-to-compliance field March 31, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
43	May 18, 2026	Informal	State Violation/Reminder Notice
44	May 18, 2026	Informal	State Public Notification requested
45	May 18, 2026	Informal	State Violation/Reminder Notice
46	May 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 127 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2025 · period end August 31, 2025 · first reported November 14, 2025 · EPA return-to-compliance field August 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
36	October 15, 2025	Informal	State Violation/Reminder Notice
37	October 15, 2025	Informal	State Public Notification requested
41	December 30, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 131 · Gross Beta Particle Activity · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
38	November 21, 2025	Informal	State Violation/Reminder Notice
39	November 21, 2025	Informal	State Public Notification requested
42	March 6, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 130 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
38	November 21, 2025	Informal	State Violation/Reminder Notice
39	November 21, 2025	Informal	State Public Notification requested
42	March 6, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 129 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
38	November 21, 2025	Informal	State Violation/Reminder Notice
39	November 21, 2025	Informal	State Public Notification requested
42	March 6, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 128 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
38	November 21, 2025	Informal	State Violation/Reminder Notice
39	November 21, 2025	Informal	State Public Notification requested
42	March 6, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 126 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2025 · period end July 31, 2025 · first reported November 14, 2025 · EPA return-to-compliance field July 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
33	September 19, 2025	Informal	State Violation/Reminder Notice
34	September 19, 2025	Informal	State Public Notification requested
40	December 30, 2025	Resolving	State Compliance achieved

Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 125 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2025 · first reported November 14, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47 August 19, 2025 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47	August 19, 2025	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring, RegularViolation 120 · Gross Beta Particle Activity · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported August 13, 2025 · EPA return-to-compliance field March 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
29	June 3, 2025	Informal	State Violation/Reminder Notice
30	June 3, 2025	Informal	State Public Notification requested
35	October 7, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 119 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported August 13, 2025 · EPA return-to-compliance field March 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
29	June 3, 2025	Informal	State Violation/Reminder Notice
30	June 3, 2025	Informal	State Public Notification requested
35	October 7, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported August 13, 2025 · EPA return-to-compliance field March 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
29	June 3, 2025	Informal	State Violation/Reminder Notice
30	June 3, 2025	Informal	State Public Notification requested
35	October 7, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 117 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported August 13, 2025 · EPA return-to-compliance field March 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
29	June 3, 2025	Informal	State Violation/Reminder Notice
30	June 3, 2025	Informal	State Public Notification requested
35	October 7, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 115 · Gross Beta Particle Activity · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25	February 28, 2024	Informal	State Violation/Reminder Notice
26	February 28, 2024	Informal	State Public Notification requested
27	April 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 114 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25	February 28, 2024	Informal	State Violation/Reminder Notice
26	February 28, 2024	Informal	State Public Notification requested
27	April 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 113 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25	February 28, 2024	Informal	State Violation/Reminder Notice
26	February 28, 2024	Informal	State Public Notification requested
27	April 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 112 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25	February 28, 2024	Informal	State Violation/Reminder Notice
26	February 28, 2024	Informal	State Public Notification requested
27	April 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 99 · Gross Beta Particle Activity · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported March 27, 2023 · EPA return-to-compliance field September 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
16	December 2, 2022	Informal	State Violation/Reminder Notice
17	December 2, 2022	Informal	State Public Notification requested
18	May 1, 2023	Resolving	State Compliance achieved
21	December 2, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 98 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported March 27, 2023 · EPA return-to-compliance field September 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
16	December 2, 2022	Informal	State Violation/Reminder Notice
17	December 2, 2022	Informal	State Public Notification requested
18	May 1, 2023	Resolving	State Compliance achieved
22	December 2, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 97 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported March 27, 2023 · EPA return-to-compliance field September 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
16	December 2, 2022	Informal	State Violation/Reminder Notice
17	December 2, 2022	Informal	State Public Notification requested
18	May 1, 2023	Resolving	State Compliance achieved
23	December 2, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 96 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported March 27, 2023 · EPA return-to-compliance field September 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
16	December 2, 2022	Informal	State Violation/Reminder Notice
17	December 2, 2022	Informal	State Public Notification requested
18	May 1, 2023	Resolving	State Compliance achieved
24	December 2, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 36 · Gross Beta Particle Activity · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported September 8, 2021 · EPA return-to-compliance field March 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7	May 14, 2021	Informal	State Violation/Reminder Notice
8	May 14, 2021	Informal	State Public Notification requested
11	March 2, 2022	Resolving	State Compliance achieved
14	May 14, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 35 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported September 8, 2021 · EPA return-to-compliance field March 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7	May 14, 2021	Informal	State Violation/Reminder Notice
8	May 14, 2021	Informal	State Public Notification requested
11	March 2, 2022	Resolving	State Compliance achieved
13	May 14, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 34 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported September 8, 2021 · EPA return-to-compliance field March 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7	May 14, 2021	Informal	State Violation/Reminder Notice
8	May 14, 2021	Informal	State Public Notification requested
11	March 2, 2022	Resolving	State Compliance achieved
15	May 14, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 33 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported September 8, 2021 · EPA return-to-compliance field March 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7	May 14, 2021	Informal	State Violation/Reminder Notice
8	May 14, 2021	Informal	State Public Notification requested
11	March 2, 2022	Resolving	State Compliance achieved
12	May 14, 2022	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