MO1010546 · Missouri

MOSBY PWS

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

Violation records shown: 30
EPA health-based flag: 19
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 4

Counties listed by EPA · Clay 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 30 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 · Resolved

Monitoring, Routine (RTCR)Violation 5301859 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2025 · period end October 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field October 31, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2222	November 24, 2025	Informal	State Violation/Reminder Notice
2223	November 24, 2025	Informal	State Public Notification requested
2224	December 19, 2025	Informal	State Public Notification received
2225	February 18, 2026	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 5301858 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 3, 2025 · period end September 1, 2025 · first reported December 31, 2025 · EPA return-to-compliance field September 1, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2218 September 1, 2025 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2218	September 1, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 5301857 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2215	August 20, 2025	Informal	State Violation/Reminder Notice
2216	August 20, 2025	Informal	State Public Notification requested
2220	August 26, 2025	Resolving	State Compliance achieved
2221	August 26, 2025	Resolving	State Compliance achieved
2217	September 9, 2025	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301856 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2212	May 23, 2025	Informal	State Public Notification requested
2213	May 23, 2025	Informal	State Formal Notice of Violation issued
2214	August 14, 2025	Resolving	State Compliance achieved
2219	September 9, 2025	Informal	State Public Notification received

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 5301855 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 22, 2023 · period end October 17, 2024 · first reported March 15, 2024 · EPA return-to-compliance field October 17, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2210 October 17, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2210	October 17, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 5301854 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2023 · period end November 1, 2023 · first reported November 14, 2023 · EPA return-to-compliance field November 1, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2208	October 26, 2023	Informal	State Formal Notice of Violation issued
2209	November 1, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301853 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · 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
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2205	September 11, 2023	Informal	State Public Notification requested
2206	September 11, 2023	Informal	State Formal Notice of Violation issued
2207	October 24, 2023	Resolving	State Compliance achieved
2211	October 24, 2024	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301852 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2202	June 15, 2023	Informal	State Public Notification requested
2203	June 15, 2023	Informal	State Formal Notice of Violation issued
2204	July 13, 2023	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301851 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2199	March 20, 2023	Informal	State Public Notification requested
2200	March 20, 2023	Informal	State Formal Notice of Violation issued
2201	April 10, 2023	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301850 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported December 14, 2022 · EPA return-to-compliance field September 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2195	December 13, 2022	Informal	State Public Notification requested
2196	December 13, 2022	Informal	State Formal Notice of Violation issued
2197	January 18, 2023	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 5301849 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2022 · period end January 24, 2023 · first reported December 9, 2022 · EPA return-to-compliance field January 24, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2198	January 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301848 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts 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
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2192	September 16, 2022	Informal	State Public Notification requested
2193	September 16, 2022	Informal	State Formal Notice of Violation issued
2194	November 30, 2022	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301847 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2188	May 27, 2022	Informal	State Public Notification requested
2189	May 27, 2022	Informal	State Formal Notice of Violation issued
2190	July 1, 2022	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301846 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field December 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2184	March 4, 2022	Informal	State Public Notification requested
2185	March 4, 2022	Informal	State Formal Notice of Violation issued
2191	August 2, 2022	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 5301845 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2021 · period end December 6, 2021 · first reported March 28, 2022 · EPA return-to-compliance field December 6, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2183	December 6, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301844 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported March 28, 2022 · EPA return-to-compliance field September 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2181	November 23, 2021	Informal	State Public Notification requested
2182	November 23, 2021	Informal	State Formal Notice of Violation issued
2186	March 8, 2022	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301843 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported March 28, 2022 · EPA return-to-compliance field June 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2176	September 7, 2021	Informal	State Public Notification requested
2177	September 7, 2021	Informal	State Formal Notice of Violation issued
2178	September 29, 2021	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301842 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2173	May 28, 2021	Informal	State Public Notification requested
2174	May 28, 2021	Informal	State Formal Notice of Violation issued
2175	July 22, 2021	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301841 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2170	February 26, 2021	Informal	State Public Notification requested
2171	February 26, 2021	Informal	State Formal Notice of Violation issued
2172	April 20, 2021	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 5301840 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2179	January 1, 2021	Resolving	State Compliance achieved
2167	February 11, 2021	Informal	State Violation/Reminder Notice
2168	February 11, 2021	Informal	State Public Notification requested
2187	September 2, 2021	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 5301839 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2179	January 1, 2021	Resolving	State Compliance achieved
2167	February 11, 2021	Informal	State Violation/Reminder Notice
2168	February 11, 2021	Informal	State Public Notification requested
2187	September 2, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301838 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported March 28, 2022 · EPA return-to-compliance field September 30, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2165	December 22, 2020	Informal	State Public Notification requested
2166	December 22, 2020	Informal	State Formal Notice of Violation issued
2169	February 3, 2021	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301837 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2020 · period end June 30, 2020 · first reported March 28, 2022 · EPA return-to-compliance field June 30, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2161	September 18, 2020	Informal	State Public Notification requested
2162	September 18, 2020	Informal	State Formal Notice of Violation issued
2164	October 14, 2020	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301836 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2158	June 15, 2020	Informal	State Public Notification requested
2159	June 15, 2020	Informal	State Formal Notice of Violation issued
2163	October 14, 2020	Informal	State Public Notification received
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301835 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2019 · period end December 31, 2019 · first reported March 28, 2022 · EPA return-to-compliance field December 31, 2019

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2154	February 21, 2020	Informal	State Public Notification requested
2155	February 21, 2020	Informal	State Formal Notice of Violation issued
2156	April 9, 2020	Informal	State Public Notification received
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2207	October 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301834 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported March 28, 2022 · EPA return-to-compliance field September 30, 2019

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2151	December 6, 2019	Informal	State Public Notification requested
2152	December 6, 2019	Informal	State Formal Notice of Violation issued
2156	April 9, 2020	Informal	State Public Notification received
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2207	October 24, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 5301831 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start April 4, 2019 · period end July 9, 2019 · first reported March 28, 2022 · EPA return-to-compliance field July 9, 2019

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2145 July 9, 2019 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2145	July 9, 2019	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301833 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2019 · period end June 30, 2019 · first reported March 28, 2022 · EPA return-to-compliance field June 30, 2019

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2147	August 28, 2019	Informal	State Public Notification requested
2148	August 28, 2019	Informal	State Formal Notice of Violation issued
2153	October 8, 2019	Informal	State Public Notification received
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2207	October 24, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 5301830 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start January 17, 2019 · period end July 9, 2019 · first reported March 28, 2022 · EPA return-to-compliance field July 9, 2019

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2145 July 9, 2019 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2145	July 9, 2019	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 5301832 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2019 · period end March 31, 2019 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2019

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2143	June 5, 2019	Informal	State Public Notification requested
2144	June 5, 2019	Informal	State Formal Notice of Violation issued
2146	July 12, 2019	Informal	State Public Notification received
2160	June 10, 2020	Formal	State Administrative/Compliance Order with penalty issued
2207	October 24, 2023	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