MI0005037 · Michigan

OSBORN LAKE ESTATES

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

Violation records shown: 4
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 3

Counties listed by EPA · Livingston County, Michigan

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

Violations and what followed

Among 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 181 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4001017 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2025 · period end October 28, 2025 · first reported February 27, 2026 · EPA return-to-compliance field October 28, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4009638	October 28, 2025	Resolving	State Compliance achieved
4009637	November 5, 2025	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

LSL ReportingViolation 4001016 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end December 18, 2024 · first reported March 3, 2025 · EPA return-to-compliance field December 18, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4009633	December 4, 2024	Informal	State Violation/Reminder Notice
4009634	December 4, 2024	Informal	State Public Notification requested
4009635	December 18, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

LSL InventoryViolation 4001015 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end December 18, 2024 · first reported March 3, 2025 · EPA return-to-compliance field December 18, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4009629	December 4, 2024	Informal	State Violation/Reminder Notice
4009630	December 4, 2024	Informal	State Public Notification requested
4009632	December 18, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4001014 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2021 · period end September 30, 2024 · first reported December 19, 2024 · EPA return-to-compliance field September 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4009625	November 8, 2024	Informal	State Violation/Reminder Notice
4009628	November 8, 2024	Informal	State Public Notification received
4009626	November 12, 2024	Informal	State Public Notification requested
4009627	November 12, 2024	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