Public Water Partners

WATERTOWN, WI · Jefferson County

WATERTOWN WATERWORKS Water System

Consumer Confidence Report status

WATERTOWN 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 WATERTOWN 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)
WI1280044
System type
Community Water System
Population served
23,945
Service connections
8,708
Ownership
local government
Water source
groundwater (wells)

WATERTOWN WATERWORKS is one of 87 community water systems in Wisconsin in the 10,001 to 100,000 people size category, serving 23,945 people from groundwater.

As of August 1, 2026, its federal record holds 2 entries in 2024, all of which EPA lists as closed.

All 2 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 the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

  • Monitoring and Reporting (DBP)

    —

    TTHM

    January 1, 2024 – December 31, 2024

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2024 – December 31, 2024

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is WATERTOWN WATERWORKS required to publish a Consumer Confidence Report?

Yes. WATERTOWN 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 WATERTOWN WATERWORKS’s next Consumer Confidence Report due?

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

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

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

HARTZ, PETER

Phone not on record

WATERTOWN, WI 53094