WI4050351 · Wisconsin
DENMARK WATERWORKS
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
- 2
Counties listed by EPA · Brown 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 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 73 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2600046 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 1, 2026 · period end March 31, 2026 · first reported May 29, 2026 · EPA return-to-compliance field March 31, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600046 April 6, 2026 Resolving State Compliance achieved 2600047 April 10, 2026 Informal State Violation/Reminder Notice 2600048 April 10, 2026 Informal State Public Notification requested 2600049 April 28, 2026 Informal State Public Notification received Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2500044 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start October 17, 2024 · period end May 6, 2025 · first reported August 28, 2025 · EPA return-to-compliance field May 6, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500040 May 6, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 2500043 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end February 10, 2025 · first reported August 28, 2025 · EPA return-to-compliance field February 10, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500034 February 10, 2025 Resolving State Compliance achieved 2500039 May 6, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2400026 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2024 · period end August 31, 2024 · first reported August 28, 2025 · EPA return-to-compliance field August 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400031 September 9, 2024 Resolving State Compliance achieved 2400032 September 10, 2024 Informal State Violation/Reminder Notice 2400033 September 10, 2024 Informal State Public Notification requested 2500041 May 6, 2025 Informal State Public Notification received
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