WI7500094 · Wisconsin

AMHERST WATERWORKS

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

Violation records shown: 6
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 3

Counties listed by EPA · Portage County, Wisconsin

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

Violations and what followed

Among 2 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 15 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Archived
Monitoring, RegularViolation 2600031 · Nitrate · Nitrate Rule
Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported September 1, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 2600030 · Nitrate · Nitrate Rule
Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported September 1, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.
Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2500027 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 17, 2024 · first reported December 17, 2025
No linked action row appears in the records shown.
Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2500026 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 17, 2024 · first reported August 28, 2025
No linked action row appears in the records shown.
EPA health-based flag · Resolved
LSL InventoryViolation 2500025 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end November 1, 2024 · first reported August 28, 2025 · EPA return-to-compliance field November 1, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500011 November 1, 2024 Resolving State Compliance achieved
Monitoring or reporting · Resolved
LSL ReportingViolation 2500024 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end November 1, 2024 · first reported August 28, 2025 · EPA return-to-compliance field November 1, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500010 November 1, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500011	November 1, 2024	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500010	November 1, 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