Public Water Partners

DEFOREST, WI · Dane County

DEFOREST SOUTH Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of June 22, 2021. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Dane County, WI.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.

System facts

System ID (PWSID)
WI1132437
System type
Community Water System
Population served
25
Service connections
69
Ownership
local government
Water source
groundwater (wells)

DEFOREST SOUTH is one of 1,289 community water systems in Wisconsin in the 500 or fewer people size category, formerly serving 25 people from groundwater.

EPA's federal records list this system as inactive in 2021; the record below is historical.

As of August 1, 2026, its federal record holds 1 entry in 2020, all of which EPA lists as closed. Nothing has been added since 2020.

None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Radionuclides and Revised Rad Rule.

Violation history

  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2020 – September 30, 2020

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Last known contact on file (system is inactive)

BLAU, JUDD - PUBLIC SERVICES DIR

Phone not on record

DEFOREST, WI 53532-0510