MO6010902 · Missouri

SILEX PWS

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

Violation records shown: 32
EPA health-based flag: 16
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 11

Counties listed by EPA · Lincoln County, Missouri

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

Violations and what followed

Among 32 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 228.5 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Notification, Known or Potential LSLViolation 9387201 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start July 2, 2025 · period end November 10, 2025 · first reported June 16, 2026 · EPA return-to-compliance field November 10, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4078	November 10, 2025	Resolving	State Compliance achieved
4076	April 6, 2026	Informal	State Violation/Reminder Notice
4077	April 6, 2026	Informal	State Public Notification requested

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 9387200 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start April 23, 2025 · period end October 23, 2025 · first reported September 25, 2025 · EPA return-to-compliance field October 23, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4074	October 23, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387199 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2024 · period end March 31, 2025 · first reported June 23, 2025 · EPA return-to-compliance field March 31, 2025

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4068	May 19, 2025	Informal	State Public Notification requested
4069	May 19, 2025	Informal	State Formal Notice of Violation issued
4070	July 11, 2025	Informal	State Public Notification received
4071	September 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9387194 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2024 · period end February 29, 2024 · first reported June 11, 2024 · EPA return-to-compliance field February 29, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4054	March 21, 2024	Resolving	State Compliance achieved
4052	March 26, 2024	Informal	State Violation/Reminder Notice
4053	March 26, 2024	Informal	State Public Notification requested
4055	May 15, 2024	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387198 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported March 28, 2025 · EPA return-to-compliance field December 31, 2024

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4066	March 13, 2025	Informal	State Public Notification requested
4067	March 13, 2025	Informal	State Formal Notice of Violation issued
4071	September 17, 2025	Resolving	State Compliance achieved
4075	December 3, 2025	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387197 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2023 · period end September 30, 2024 · first reported December 20, 2024 · EPA return-to-compliance field September 30, 2024

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4064	December 3, 2024	Informal	State Public Notification requested
4065	December 3, 2024	Informal	State Formal Notice of Violation issued
4071	September 17, 2025	Resolving	State Compliance achieved
4073	December 3, 2025	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387196 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2023 · period end June 30, 2024 · first reported September 30, 2024 · EPA return-to-compliance field June 30, 2024

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4060	September 3, 2024	Informal	State Public Notification requested
4061	September 3, 2024	Informal	State Formal Notice of Violation issued
4071	September 17, 2025	Resolving	State Compliance achieved
4072	December 3, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9387188 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2023 · period end May 31, 2023 · first reported September 15, 2023 · EPA return-to-compliance field May 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4026	June 26, 2023	Informal	State Public Notification received
4041	June 26, 2023	Resolving	State Compliance achieved
4024	June 27, 2023	Informal	State Violation/Reminder Notice
4025	June 27, 2023	Informal	State Public Notification requested

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387195 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2023 · period end March 31, 2024 · first reported June 11, 2024 · EPA return-to-compliance field March 31, 2024

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4057	June 10, 2024	Informal	State Public Notification requested
4058	June 10, 2024	Informal	State Formal Notice of Violation issued
4059	July 12, 2024	Informal	State Public Notification received
4071	September 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387193 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported March 15, 2024 · EPA return-to-compliance field December 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4048	February 27, 2024	Informal	State Public Notification requested
4049	February 27, 2024	Informal	State Formal Notice of Violation issued
4050	February 29, 2024	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 9387185 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 3, 2022 · period end July 3, 2023 · first reported March 27, 2023 · EPA return-to-compliance field July 3, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4035	July 3, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Source Water (GWR)Violation 9387184 · E. COLI · Ground Water Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4015	November 1, 2022	Resolving	State Compliance achieved
4013	January 11, 2023	Informal	State Violation/Reminder Notice
4014	January 11, 2023	Informal	State Public Notification requested
4017	January 23, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9387183 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4011	January 3, 2023	Informal	State Violation/Reminder Notice
4012	January 3, 2023	Informal	State Public Notification requested
4020	January 12, 2023	Resolving	State Compliance achieved
4016	January 23, 2023	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387191 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2022 · period end September 30, 2023 · first reported December 26, 2023 · EPA return-to-compliance field September 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4042	December 4, 2023	Informal	State Public Notification requested
4043	December 4, 2023	Informal	State Formal Notice of Violation issued
4051	February 29, 2024	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387190 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2022 · period end June 30, 2023 · first reported September 15, 2023 · EPA return-to-compliance field June 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4038	August 9, 2023	Informal	State Public Notification requested
4039	August 9, 2023	Informal	State Formal Notice of Violation issued
4040	August 23, 2023	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 9387173 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 26, 2022 · period end December 14, 2023 · first reported September 22, 2022 · EPA return-to-compliance field December 14, 2023

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
3992	April 27, 2022	Informal	State Public Notification requested
3993	April 27, 2022	Informal	State Formal Notice of Violation issued
3998	June 2, 2022	Informal	State Public Notification received
4046	December 14, 2023	Resolving	State Compliance achieved
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387187 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2022 · period end March 31, 2023 · first reported June 22, 2023 · EPA return-to-compliance field March 31, 2023

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4022	June 2, 2023	Informal	State Public Notification requested
4023	June 2, 2023	Informal	State Formal Notice of Violation issued
4033	July 4, 2023	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 9387178 · Radium-228 · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported September 22, 2022 · EPA return-to-compliance field June 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4002	July 21, 2022	Informal	State Violation/Reminder Notice
4003	July 21, 2022	Informal	State Public Notification requested
4004	August 22, 2022	Informal	State Public Notification received
4047	July 14, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 9387177 · Radium-226 · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported September 22, 2022 · EPA return-to-compliance field June 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4002	July 21, 2022	Informal	State Violation/Reminder Notice
4003	July 21, 2022	Informal	State Public Notification requested
4004	August 22, 2022	Informal	State Public Notification received
4047	July 14, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 9387176 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported September 22, 2022 · EPA return-to-compliance field June 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4002	July 21, 2022	Informal	State Violation/Reminder Notice
4003	July 21, 2022	Informal	State Public Notification requested
4004	August 22, 2022	Informal	State Public Notification received
4047	July 14, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9387175 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2022 · period end April 30, 2022 · first reported September 22, 2022 · EPA return-to-compliance field April 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3999	May 18, 2022	Resolving	State Compliance achieved
3996	May 31, 2022	Informal	State Violation/Reminder Notice
3997	May 31, 2022	Informal	State Public Notification requested
4001	July 11, 2022	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387186 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported March 27, 2023 · EPA return-to-compliance field December 31, 2022

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4018	February 23, 2023	Informal	State Public Notification requested
4019	February 23, 2023	Informal	State Formal Notice of Violation issued
4034	August 4, 2023	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387182 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2021 · period end September 30, 2022 · first reported December 9, 2022 · EPA return-to-compliance field September 30, 2022

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4008	November 30, 2022	Informal	State Public Notification requested
4009	November 30, 2022	Informal	State Formal Notice of Violation issued
4010	December 27, 2022	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387180 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2021 · period end June 30, 2022 · first reported September 22, 2022 · EPA return-to-compliance field June 30, 2022

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
4005	August 23, 2022	Informal	State Public Notification requested
4006	August 23, 2022	Informal	State Formal Notice of Violation issued
4036	August 4, 2023	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 9387174 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2021 · period end March 31, 2022 · first reported June 8, 2022 · EPA return-to-compliance field March 31, 2022

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3941	March 30, 2018	Formal	State Administrative/Compliance Order without penalty issued
3994	May 13, 2022	Informal	State Public Notification requested
3995	May 13, 2022	Informal	State Formal Notice of Violation issued
4000	July 11, 2022	Informal	State Public Notification received
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued
4071	September 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 9387172 · Groundwater Rule · Ground Water Rule

Noncompliance period start February 13, 2021 · period end July 16, 2021 · first reported March 28, 2022 · EPA return-to-compliance field July 16, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3986	April 20, 2021	Informal	State Formal Notice of Violation issued
3987	April 20, 2021	Informal	State Public Notification requested
3989	June 22, 2021	Informal	State Public Notification received
3990	July 16, 2021	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation without NPDWR ViolationViolation 9387171 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start November 2, 2020 · period end June 2, 2021 · first reported June 8, 2022 · EPA return-to-compliance field June 2, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
3988 June 2, 2021 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3988	June 2, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9387170 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2020 · period end July 31, 2020 · first reported March 28, 2022 · EPA return-to-compliance field July 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3982	August 31, 2020	Informal	State Violation/Reminder Notice
3983	August 31, 2020	Informal	State Public Notification requested
3985	October 7, 2020	Resolving	State Compliance achieved
3984	October 14, 2020	Informal	State Public Notification received

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 9387168 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start February 4, 2020 · period end May 18, 2020 · first reported March 28, 2022 · EPA return-to-compliance field May 18, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3967	February 4, 2020	Informal	State Formal Notice of Violation issued
3980	May 18, 2020	Resolving	State Compliance achieved
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9387169 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2020 · period end January 31, 2020 · first reported March 28, 2022 · EPA return-to-compliance field January 31, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3972	February 28, 2020	Resolving	State Compliance achieved
3968	March 3, 2020	Informal	State Violation/Reminder Notice
3969	March 3, 2020	Informal	State Public Notification requested
3985	October 7, 2020	Resolving	State Compliance achieved
3989	June 22, 2021	Informal	State Public Notification received

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 9387166 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 11, 2019 · period end March 12, 2020 · first reported March 28, 2022 · EPA return-to-compliance field March 12, 2020

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3975	March 12, 2020	Resolving	State Compliance achieved
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 9387164 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start April 2, 2019 · period end March 12, 2020 · first reported March 28, 2022 · EPA return-to-compliance field March 12, 2020

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
3973	March 12, 2020	Resolving	State Compliance achieved
4056	May 17, 2024	Formal	State Administrative/Compliance Order with penalty issued

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