EPA public water records · 55055
Jefferson County, Wisconsin
Find listed community water systems and their documented follow-up in federal fiscal 2026Q3.
- Systems with linked histories
- 17
- Systems with unresolved health-based records
- 0
- Of those, systems with a formally addressed health-based record
- 0
These counts cover the linked records shown here. A county listing can cover only part of the county or reflect a mailing location.
Find your water system
- AUTUMN RIDGE WATER SYSTEM LLCWI1281138 · Wisconsin · 3 violation records · 0 unresolved health-based in this snapshot
- HICKORY HILL PARK LLCWI1280116 · Wisconsin · 1 violation records · 0 unresolved health-based in this snapshot
- JEFFERSON WATERWORKSWI1280104 · Wisconsin · 9 violation records · 0 unresolved health-based in this snapshot
- JOHNSON CREEK WATERWORKSWI1280107 · Wisconsin · 16 violation records · 0 unresolved health-based in this snapshot
- LAKE MILLS WATERWORKSWI1280108 · Wisconsin · 6 violation records · 0 unresolved health-based in this snapshot
- LAKEWOOD VILLAGEWI1280109 · Wisconsin · 2 violation records · 0 unresolved health-based in this snapshot
- OAK RIDGE MOBILE COM 4WI1281056 · Wisconsin · 2 violation records · 0 unresolved health-based in this snapshot
- PALMYRA WATERWORKSWI1280112 · Wisconsin · 3 violation records · 0 unresolved health-based in this snapshot
- PARKVIEW APARTMENTSWI1280055 · Wisconsin · 7 violation records · 0 unresolved health-based in this snapshot
- RIVER VALLEY APTS NORTHWI1281099 · Wisconsin · 1 violation records · 0 unresolved health-based in this snapshot
- RIVER VALLEY APTS SOUTHWI1281100 · Wisconsin · 2 violation records · 0 unresolved health-based in this snapshot
- ROCK RIVER MOBILE HOME PARKWI1280106 · Wisconsin · 7 violation records · 0 unresolved health-based in this snapshot
- STANTON PLACE IIWI1281162 · Wisconsin · 1 violation records · 0 unresolved health-based in this snapshot
- TREMAIN MOBILE HOME PARKWI1280127 · Wisconsin · 8 violation records · 0 unresolved health-based in this snapshot
- WATERLOO WATERWORKSWI1280115 · Wisconsin · 1 violation records · 0 unresolved health-based in this snapshot
- WATERTOWN WATERWORKSWI1280044 · Wisconsin · 2 violation records · 0 unresolved health-based in this snapshot
- WOLFS MOBILE HOMESWI1280126 · Wisconsin · 7 violation records · 0 unresolved health-based in this snapshot
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