MO4010379 · Missouri
HORNERSVILLE PWS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 16
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 14
Counties listed by EPA · Dunklin 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 15 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 89 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Unaddressed by formal action
Notification, Known or Potential LSLViolation 119302 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · first reported June 16, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510065 April 6, 2026 Informal State Violation/Reminder Notice 1510066 April 6, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 119300 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2024 · period end November 30, 2024 · first reported March 28, 2025 · EPA return-to-compliance field November 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510059 December 18, 2024 Resolving State Compliance achieved 1510057 January 8, 2025 Informal State Violation/Reminder Notice 1510058 January 8, 2025 Informal State Public Notification requested 1510064 May 12, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
LSL ReportingViolation 119301 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end November 22, 2024 · first reported December 31, 2025 · EPA return-to-compliance field November 22, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510062 November 22, 2024 Resolving State Compliance achieved 1510063 May 1, 2025 Informal State Public Notification received 1510060 October 9, 2025 Informal State Violation/Reminder Notice 1510061 October 9, 2025 Informal State Public Notification requested Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 119299 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start June 28, 2023 · period end September 1, 2023 · first reported September 15, 2023 · EPA return-to-compliance field September 1, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510051 September 1, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 119298 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start May 1, 2022 · period end May 31, 2022 · first reported September 22, 2022 · EPA return-to-compliance field May 31, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510049 June 24, 2022 Resolving State Compliance achieved 1510047 June 27, 2022 Informal State Violation/Reminder Notice 1510048 June 27, 2022 Informal State Public Notification requested 1510052 October 1, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119297 · Selenium · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119296 · Thallium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119295 · Beryllium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119294 · Antimony, Total · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119293 · Mercury · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119292 · Fluoride · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119291 · Chromium · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119290 · Cadmium · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119289 · Barium · Inorganic ChemicalsNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 119288 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2021
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510055 September 30, 2020 Resolving State Compliance achieved 1510044 April 7, 2021 Informal State Violation/Reminder Notice 1510045 April 7, 2021 Informal State Public Notification requested 1510046 April 20, 2021 Resolving State Compliance achieved 1510053 February 8, 2022 Resolving State Compliance achieved 1510050 June 16, 2022 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 119245 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2019 · period end September 3, 2020 · first reported March 28, 2022 · EPA return-to-compliance field September 3, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1510041 September 3, 2020 Resolving State Compliance achieved 1510042 September 3, 2020 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