Public water system · WI4360364
ActiveManitowoc Waterworks
At a glance
Manitowoc Waterworks (PWSID WI4360364) is an active community water system in Manitowoc County, Wisconsin. It reports serving 34,500 people through 14,641 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in January 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
34,500
Service connections
14,641
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Manitowoc Waterworks compare with other water systems in Manitowoc County?
By EPA's size categories, Manitowoc Waterworks is a large system (10,001 to 100,000 people). Manitowoc County has 139 active public water systems, and Manitowoc Waterworks is the largest of them by population served. Its population served is about 75 times the county average of 461 people per system, and accounts for 54% of the 64,022 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 Manitowoc Waterworks is about 5.1 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 20 Wisconsin systems (0.2%) list surface water as their primary source.
Who owns and regulates Manitowoc Waterworks?
EPA lists Manitowoc 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. 18 of the 139 active systems in Manitowoc County (13%) are also owned by a local government.
Does Manitowoc Waterworks have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in January 1996. By type: 1 monitoring and reporting. The contaminant or rule involved is 2,3,7,8-TCDD (dioxin). EPA lists 1 as archived. 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 |
|---|---|---|---|---|
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,3,7,8-TCDD (dioxin)code 2063 | No | Archived |
The one violation in EPA's records.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.
Manitowoc Waterworks: frequently asked questions
Who runs Manitowoc Waterworks?
Manitowoc Waterworks (PWSID WI4360364) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Manitowoc Waterworks serve?
Manitowoc Waterworks reports serving 34,500 people through 14,641 service connections in Manitowoc County, Wisconsin.
Where does Manitowoc Waterworks get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Manitowoc Waterworks have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in January 1996. 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 Manitowoc 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 one violation for this system; it is not health-based, and the most recent began in January 1996. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Manitowoc Waterworks' water quality report?
As a community water system, Manitowoc 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 Manitowoc County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Two Rivers Waterworks | Manitowoc | 11,270 | Community | Surface water |
| Kiel Waterworks | Manitowoc | 3,932 | Community | Groundwater |
| Cleveland Waterworks | Manitowoc | 1,524 | Community | Groundwater |
| Mishicot Waterworks | Manitowoc | 1,432 | Community | Groundwater |
| Reedsville Waterworks | Manitowoc | 1,200 | Community | Groundwater |
| Valders Waterworks | Manitowoc | 954 | 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, “Manitowoc Waterworks, PWSID WI4360364, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/manitowoc-waterworks-wi4360364 (data as of October 1, 2026).