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MO1010024 · Missouri

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

Violation records shown: 30
EPA health-based flag: 11
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 17

Counties listed by EPA · Cass County, Missouri

Open the EPA system record

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

Violations and what followed

Among 16 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.

Monitoring or reporting · Unaddressed by formal action
Notification, Known or Potential LSLViolation 123158 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start July 2, 2025 · first reported March 25, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
138 March 12, 2026 Informal State Violation/Reminder Notice
139 March 12, 2026 Informal State Public Notification requested
Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 123157 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2025 · first reported December 31, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
137 November 24, 2025 Informal State Formal Notice of Violation issued

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123156 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
132	November 21, 2024	Informal	State Violation/Reminder Notice
133	November 21, 2024	Informal	State Public Notification requested
135	December 17, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123155 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
130	November 21, 2024	Informal	State Violation/Reminder Notice
131	November 21, 2024	Informal	State Public Notification requested
136	December 17, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Filter)Violation 123154 · Surface Water Treatment Rule · Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128	November 21, 2024	Informal	State Violation/Reminder Notice
129	November 21, 2024	Informal	State Public Notification requested
134	December 17, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123153 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported September 30, 2024 · EPA return-to-compliance field May 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
119	June 25, 2024	Informal	State Violation/Reminder Notice
120	June 25, 2024	Informal	State Public Notification requested
126	September 12, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123152 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported September 30, 2024 · EPA return-to-compliance field May 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
117	June 25, 2024	Informal	State Violation/Reminder Notice
118	June 25, 2024	Informal	State Public Notification requested
127	September 12, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Filter)Violation 123151 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported September 30, 2024 · EPA return-to-compliance field May 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
115	June 25, 2024	Informal	State Violation/Reminder Notice
116	June 25, 2024	Informal	State Public Notification requested
125	September 12, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123150 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
112	February 22, 2024	Informal	State Violation/Reminder Notice
113	February 22, 2024	Informal	State Public Notification requested
123	February 29, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123149 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
110	February 22, 2024	Informal	State Violation/Reminder Notice
111	February 22, 2024	Informal	State Public Notification requested
124	February 29, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Filter)Violation 123148 · Surface Water Treatment Rule · Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
108	February 22, 2024	Informal	State Violation/Reminder Notice
109	February 22, 2024	Informal	State Public Notification requested
122	February 29, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123147 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start December 1, 2023 · period end December 31, 2023 · first reported March 15, 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
102	January 29, 2024	Informal	State Violation/Reminder Notice
103	January 29, 2024	Informal	State Public Notification requested
105	March 8, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 123146 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start December 1, 2023 · period end December 31, 2023 · first reported March 15, 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
100	January 29, 2024	Informal	State Violation/Reminder Notice
101	January 29, 2024	Informal	State Public Notification requested
104	March 8, 2024	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Filter)Violation 123145 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start December 1, 2023 · period end December 31, 2023 · first reported March 15, 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
98	January 29, 2024	Informal	State Violation/Reminder Notice
99	January 29, 2024	Informal	State Public Notification requested
106	March 8, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 123144 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
96	December 19, 2023	Informal	State Violation/Reminder Notice
97	December 19, 2023	Informal	State Public Notification requested
107	March 8, 2024	Informal	State Public Notification received
114	May 13, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 123143 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
96	December 19, 2023	Informal	State Violation/Reminder Notice
97	December 19, 2023	Informal	State Public Notification requested
107	March 8, 2024	Informal	State Public Notification received
114	May 13, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Monthly Turbidity Exceed (Enhanced SWTR)Violation 123139 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
89	August 1, 2021	Resolving	State Compliance achieved
93	August 2, 2021	Resolving	State Compliance achieved
83	September 1, 2021	Informal	State Public Notification requested
84	September 1, 2021	Informal	State Formal Notice of Violation issued
92	September 28, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Monthly Turbidity Exceed (Enhanced SWTR)Violation 123138 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start June 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
89	August 1, 2021	Resolving	State Compliance achieved
93	August 2, 2021	Resolving	State Compliance achieved
85	September 1, 2021	Informal	State Public Notification requested
86	September 1, 2021	Informal	State Formal Notice of Violation issued
92	September 28, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123142 · 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
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
90	September 27, 2021	Informal	State Public Notification requested
91	September 27, 2021	Informal	State Formal Notice of Violation issued
94	October 25, 2021	Informal	State Public Notification received
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123137 · 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
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
80	June 4, 2021	Informal	State Public Notification requested
81	June 4, 2021	Informal	State Formal Notice of Violation issued
82	August 2, 2021	Informal	State Public Notification received
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123136 · 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
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
77	February 26, 2021	Informal	State Public Notification requested
78	February 26, 2021	Informal	State Formal Notice of Violation issued
79	April 28, 2021	Informal	State Public Notification received
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123135 · 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
72	December 22, 2020	Informal	State Public Notification requested
73	December 22, 2020	Informal	State Formal Notice of Violation issued
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
76	February 8, 2021	Informal	State Public Notification received
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123134 · 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
69	September 18, 2020	Informal	State Public Notification requested
70	September 18, 2020	Informal	State Formal Notice of Violation issued
71	October 30, 2020	Informal	State Public Notification received
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123132 · 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
66	June 15, 2020	Informal	State Public Notification requested
67	June 15, 2020	Informal	State Formal Notice of Violation issued
68	July 27, 2020	Informal	State Public Notification received
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123131 · 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
61	February 21, 2020	Informal	State Public Notification requested
62	February 21, 2020	Informal	State Formal Notice of Violation issued
64	April 2, 2020	Informal	State Public Notification received
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123130 · 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
58	January 3, 2020	Informal	State Public Notification requested
59	January 3, 2020	Informal	State Formal Notice of Violation issued
60	February 19, 2020	Informal	State Public Notification received
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
95	November 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 123127 · 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
51	August 28, 2019	Informal	State Public Notification requested
52	August 28, 2019	Informal	State Formal Notice of Violation issued
57	October 8, 2019	Informal	State Public Notification received
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued
95	November 29, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 123129 · Total Haloacetic Acids (HAA5) · 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
65	May 20, 2019	Resolving	State Compliance achieved
53	August 28, 2019	Informal	State Violation/Reminder Notice
54	August 28, 2019	Informal	State Public Notification requested
56	October 8, 2019	Informal	State Public Notification received
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 123128 · 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
65	May 20, 2019	Resolving	State Compliance achieved
53	August 28, 2019	Informal	State Violation/Reminder Notice
54	August 28, 2019	Informal	State Public Notification requested
56	October 8, 2019	Informal	State Public Notification received
75	February 5, 2021	Formal	State Administrative/Compliance Order with penalty issued

Other or unclassified · Resolved
Failure to Consult with StateViolation 123123 · Long Term 2 Enhanced Surface Water Treatment Rule · Long Term 2 Enhanced Surface Water Treatment Rule
Noncompliance period start November 29, 2016 · period end May 26, 2017 · first reported June 14, 2021 · EPA return-to-compliance field May 26, 2017

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
50 May 26, 2017 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