Public water system · WI4360430
ActiveMishicot Waterworks
At a glance
Mishicot Waterworks (PWSID WI4360430) is an active community water system in Manitowoc County, Wisconsin. It reports serving 1,432 people through 530 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,432
Service connections
530
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mishicot Waterworks compare with other water systems in Manitowoc County?
By EPA's size categories, Mishicot Waterworks is a small system (501 to 3,300 people). Manitowoc County has 139 active public water systems, and Mishicot Waterworks is the 5th-largest of them by population served. Its population served is about 3.1 times the county average of 461 people per system, and accounts for 2.2% 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 Mishicot Waterworks is well below 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 Mishicot Waterworks?
EPA lists Mishicot 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 Mishicot Waterworks have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2009. The violations listed here began between August 2006 and October 2009. By type: 2 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 3 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2009-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2009-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2006-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Mishicot Waterworks: frequently asked questions
Who runs Mishicot Waterworks?
Mishicot Waterworks (PWSID WI4360430) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Mishicot Waterworks serve?
Mishicot Waterworks reports serving 1,432 people through 530 service connections in Manitowoc County, Wisconsin.
Where does Mishicot 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 Mishicot Waterworks have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2009. 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 Mishicot 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 3 violations for this system; none is health-based, and the most recent began in October 2009. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Mishicot Waterworks' water quality report?
As a community water system, Mishicot 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 |
|---|---|---|---|---|
| Manitowoc Waterworks | Manitowoc | 34,500 | Community | Surface water |
| Two Rivers Waterworks | Manitowoc | 11,270 | Community | Surface water |
| Kiel Waterworks | Manitowoc | 3,932 | Community | Groundwater |
| Cleveland Waterworks | Manitowoc | 1,524 | 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, “Mishicot Waterworks, PWSID WI4360430, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/mishicot-waterworks-wi4360430 (data as of October 1, 2026).