WI2686336 · Wisconsin
DELAFIELD WOODS 411
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 3
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 3
Counties listed by EPA · Waukesha 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 3 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 365 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 2200007 · E. COLI · Ground Water RuleNoncompliance period start May 7, 2022 · period end May 12, 2022 · first reported August 28, 2025 · EPA return-to-compliance field May 12, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2200026 May 12, 2022 Resolving State Compliance achieved 2200023 May 13, 2022 Informal State Violation/Reminder Notice 2200024 May 13, 2022 Informal State Public Notification requested 2300028 March 17, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 2100006 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start June 1, 2021 · period end September 22, 2022 · first reported December 2, 2021 · EPA return-to-compliance field September 22, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2200021 October 18, 2021 Informal State Violation/Reminder Notice 2200022 October 18, 2021 Informal State Public Notification requested 2200025 May 18, 2022 Informal State Public Notification received 2200027 September 22, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2100005 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2020 · period end December 31, 2020 · first reported March 3, 2021 · EPA return-to-compliance field December 31, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100016 February 26, 2021 Informal State Violation/Reminder Notice 2100017 February 26, 2021 Informal State Public Notification requested 2100019 March 22, 2021 Resolving State Compliance achieved 2100020 June 25, 2021 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