MO1010508 · Missouri
MARYVILLE PWS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 13
- EPA health-based flag
- 4
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 4
Counties listed by EPA · Nodaway 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 13 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 29 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 361329 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start February 26, 2026 · period end February 27, 2026 · first reported June 16, 2026 · EPA return-to-compliance field February 27, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422851 February 27, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 361328 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start December 1, 2025 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422848 January 13, 2026 Informal State Public Notification requested 1422849 January 13, 2026 Informal State Formal Notice of Violation issued 1422852 February 13, 2026 Resolving State Compliance achieved 1422850 March 3, 2026 Informal State Public Notification received Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 361327 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start April 22, 2024 · period end April 26, 2024 · first reported September 30, 2024 · EPA return-to-compliance field April 26, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422846 April 26, 2024 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 361326 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start April 22, 2024 · period end April 26, 2024 · first reported September 30, 2024 · EPA return-to-compliance field April 26, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422845 April 26, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 361325 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start March 1, 2024 · period end March 31, 2024 · first reported June 11, 2024 · EPA return-to-compliance field March 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422838 April 18, 2024 Informal State Public Notification requested 1422839 April 18, 2024 Informal State Formal Notice of Violation issued 1422842 April 26, 2024 Informal State Public Notification received 1422847 April 30, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 361324 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start March 1, 2024 · period end March 31, 2024 · first reported June 11, 2024 · EPA return-to-compliance field March 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422836 April 18, 2024 Informal State Public Notification requested 1422837 April 18, 2024 Informal State Formal Notice of Violation issued 1422843 April 26, 2024 Informal State Public Notification received 1422844 May 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 361323 · Chlorine dioxide · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start February 1, 2024 · period end February 29, 2024 · first reported June 11, 2024 · EPA return-to-compliance field February 29, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422844 May 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 361322 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 1422834 March 12, 2024 Informal State Public Notification requested 1422835 March 12, 2024 Informal State Formal Notice of Violation issued 1422840 April 26, 2024 Informal State Public Notification received 1422844 May 22, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 361321 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 1422832 March 12, 2024 Informal State Public Notification requested 1422833 March 12, 2024 Informal State Formal Notice of Violation issued 1422841 April 26, 2024 Informal State Public Notification received 1422847 April 30, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 361320 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start November 1, 2023 · period end November 30, 2023 · first reported March 15, 2024 · EPA return-to-compliance field November 30, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422829 December 21, 2023 Informal State Violation/Reminder Notice 1422830 December 21, 2023 Informal State Public Notification requested 1422831 February 8, 2024 Informal State Public Notification received 1422844 May 22, 2024 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 361319 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start March 6, 2023 · period end April 25, 2023 · first reported June 22, 2023 · EPA return-to-compliance field April 25, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422827 April 25, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 361318 · Long Term 2 Enhanced Surface Water Treatment Rule · Long Term 2 Enhanced Surface Water Treatment RuleNoncompliance period start December 27, 2022 · period end February 14, 2023 · first reported March 27, 2023 · EPA return-to-compliance field February 14, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422823 January 24, 2023 Informal State Formal Notice of Violation issued 1422824 January 24, 2023 Informal State Public Notification requested 1422825 February 14, 2023 Resolving State Compliance achieved 1422828 May 1, 2023 Informal State Public Notification received Other or unclassified · Resolved
Failure to Consult with StateViolation 361317 · Groundwater Rule · Ground Water RuleNoncompliance period start August 27, 2022 · period end November 8, 2022 · first reported December 9, 2022 · EPA return-to-compliance field November 8, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1422826 November 8, 2022 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