Public Water Partners

BROOKFIELD, WI · Waukesha County

SUNSET SLOPE WATER TRUST Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of January 11, 1999. 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 Waukesha 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)
WI2681441
System type
Community Water System
Population served
25
Service connections
9
Ownership
privately owned
Water source
groundwater (wells)

SUNSET SLOPE WATER TRUST 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 1999; the record below is historical.

As of August 1, 2026, its federal record holds 37 entries between 1993 and 1998, all of which EPA lists as closed. Nothing has been added since 1998.

Of the 37, 36 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, volatile organic chemicals, and inorganic chemicals.

Violation history

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Nitrate-Nitrite

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Nitrite

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Arsenic

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Regular

    —

    Cadmium

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    February 1, 1997 – February 28, 1997

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 1997 – December 31, 1997

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 1997 – December 31, 1997

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 1997 – December 31, 1997

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 1997 – December 31, 1997

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 1996 – December 31, 1996

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    July 1, 1994 – July 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 1994 – March 31, 1994

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 1994 – March 31, 1994

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    October 1, 1993 – December 31, 1993

    Archived

  • Water Quality Parameter M/R

    —

    Lead and Copper Rule

    June 30, 1993 – December 31, 1993

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 1993 – December 31, 1993

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Last known contact on file (system is inactive)

Not on record

Phone not on record

BROOKFIELD, WI 53045