Public water system · WI4600445
ActiveOostburg Waterworks
At a glance
Oostburg Waterworks (PWSID WI4600445) is an active community water system in Sheboygan County, Wisconsin. It reports serving 3,110 people through 1,151 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2002.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,110
Service connections
1,151
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Oostburg Waterworks compare with other water systems in Sheboygan County?
By EPA's size categories, Oostburg Waterworks is a small system (501 to 3,300 people). Sheboygan County has 215 active public water systems, and Oostburg Waterworks is the 5th-largest of them by population served. Its population served is about 5.6 times the county average of 559 people per system, and accounts for 2.6% of the 120,200 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Oostburg Waterworks is about half of that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Wisconsin has 1,053 active community water systems, 9.5% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.
Who owns and regulates Oostburg Waterworks?
EPA lists Oostburg Waterworks as owned by a local government. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 31 of the 215 active systems in Sheboygan County (14%) are also owned by a local government.
Does Oostburg Waterworks have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2002. The violations listed here began between July 1991 and July 2002. By type: 4 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 3 as resolved and 2 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2000-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1991-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 5 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Oostburg Waterworks: frequently asked questions
Who runs Oostburg Waterworks?
Oostburg Waterworks (PWSID WI4600445) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Oostburg Waterworks serve?
Oostburg Waterworks reports serving 3,110 people through 1,151 service connections in Sheboygan County, Wisconsin.
Where does Oostburg Waterworks get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Oostburg Waterworks have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2002. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Oostburg Waterworks' water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2002. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Oostburg Waterworks' water quality report?
As a community water system, Oostburg Waterworks must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Sheboygan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sheboygan Water Utilities | Sheboygan | 49,931 | Community | Surface water |
| Plymouth Utilities | Sheboygan | 8,964 | Community | Groundwater |
| Sheboygan Falls Utilities | Sheboygan | 8,687 | Community | Purchased surface water |
| Sheboygan Tn Waterworks | Sheboygan | 4,596 | Community | Groundwater |
| Kohler Waterworks | Sheboygan | 2,271 | Community | Purchased surface water |
| Cedar Grove Waterworks | Sheboygan | 2,213 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Oostburg Waterworks, PWSID WI4600445, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/oostburg-waterworks-wi4600445 (data as of October 1, 2026).