MO6010368 · Missouri
HILLSBORO PWS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 5
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 1
Counties listed by EPA · Jefferson 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 5 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 8402426 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start September 28, 2025 · period end September 30, 2025 · first reported December 31, 2025 · EPA return-to-compliance field September 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3442 September 30, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Treatment Technique, Level 1 Assessment (RTCR)Violation 8402425 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 30, 2025 · period end July 29, 2025 · first reported September 25, 2025 · EPA return-to-compliance field July 29, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3438 July 29, 2025 Informal State Formal Notice of Violation issued 3439 July 29, 2025 Informal State Public Notification requested 3440 July 29, 2025 Resolving State Compliance achieved 3441 September 30, 2025 Informal State Public Notification received Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 8402424 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start February 1, 2024 · period end March 15, 2024 · first reported June 11, 2024 · EPA return-to-compliance field March 15, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3436 March 15, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 8402423 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2022 · period end December 31, 2022 · first reported March 27, 2023 · EPA return-to-compliance field December 31, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3435 January 9, 2023 Resolving State Compliance achieved 3433 January 31, 2023 Informal State Violation/Reminder Notice 3434 January 31, 2023 Informal State Public Notification requested 3437 April 1, 2024 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 8402419 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2019 · period end November 26, 2019 · first reported March 28, 2022 · EPA return-to-compliance field November 26, 2019
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3430 November 26, 2019 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