Public Water Partners

THERESA, WI · Dodge County

THERESA WATERWORKS Water System

Consumer Confidence Report status

THERESA WATERWORKS must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for THERESA WATERWORKS.

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)
WI1140154
System type
Community Water System
Population served
1,262
Service connections
569
Ownership
local government
Water source
groundwater (wells)

THERESA WATERWORKS is one of 333 community water systems in Wisconsin in the 501 to 3,300 people size category, serving 1,262 people from groundwater.

As of August 1, 2026, its federal record holds 63 entries between 1993 and 2008, all of which EPA lists as closed. Nothing has been added since 2008.

All 63 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 volatile organic chemicals and synthetic organic chemicals.

Violation history

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    October 1, 2008 – December 31, 2008

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Benzene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Benzene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Toluene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Toluene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Styrene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Styrene

    January 1, 1993 – December 31, 1993

    Archived

  • Monitoring, Regular

    —

    Endrin

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 1993 – December 29, 1993

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 1993 – December 29, 1993

    Resolved

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

Enforcement actions

Common questions

Is THERESA WATERWORKS required to publish a Consumer Confidence Report?

Yes. THERESA WATERWORKS is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is THERESA WATERWORKS’s next Consumer Confidence Report due?

THERESA WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does THERESA WATERWORKS have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for THERESA WATERWORKS.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

THERESA VILLAGE CLERK AND TREASURER - BECKY TELLIER

Phone not on record

THERESA, WI 53091-0327