Public Water Partners

OOSTBURG, WI · Sheboygan County

OOSTBURG WATERWORKS Water System

Consumer Confidence Report status

OOSTBURG 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 OOSTBURG 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)
WI4600445
System type
Community Water System
Population served
3,110
Service connections
1,151
Ownership
local government
Water source
groundwater (wells)

OOSTBURG WATERWORKS is one of 333 community water systems in Wisconsin in the 501 to 3,300 people size category, serving 3,110 people from groundwater.

As of August 1, 2026, its federal record holds 1 entry in 1991, all of which EPA lists as closed. Nothing has been added since 1991.

All 1 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 Total Coliform Rules.

Violation history

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    August 1, 1991 – August 31, 1991

    Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Common questions

Is OOSTBURG WATERWORKS required to publish a Consumer Confidence Report?

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

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

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

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

OOSTBURG VILLAGE CLERK - AMY WILTERDINK

Phone not on record

OOSTBURG, WI 53070