Public water system · WI4360441
ActiveKellnersville Waterworks
At a glance
Kellnersville Waterworks (PWSID WI4360441) is an active community water system in Manitowoc County, Wisconsin. It reports serving 301 people through 111 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in February 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
301
Service connections
111
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Kellnersville Waterworks compare with other water systems in Manitowoc County?
By EPA's size categories, Kellnersville Waterworks is a very small system (500 people or fewer). Manitowoc County has 139 active public water systems. Its population served is about 35% below the county average of 461 people per system, and accounts for 0.5% 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 Kellnersville 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 Kellnersville Waterworks?
EPA lists Kellnersville 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 Kellnersville Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in February 2026. The violations listed here began between April 2020 and February 2026. By type: 3 required treatment not met, 3 public notice, recordkeeping or other, 3 monitoring and reporting, 2 monitoring and 1 reporting. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-02-02 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2023-10-01 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2023-06-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-05-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2021-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
The 12 most recent 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.
Kellnersville Waterworks: frequently asked questions
Who runs Kellnersville Waterworks?
Kellnersville Waterworks (PWSID WI4360441) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Kellnersville Waterworks serve?
Kellnersville Waterworks reports serving 301 people through 111 service connections in Manitowoc County, Wisconsin.
Where does Kellnersville 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 Kellnersville Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in February 2026. 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 Kellnersville 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. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in February 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Kellnersville Waterworks' water quality report?
As a community water system, Kellnersville 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 |
| Mishicot Waterworks | Manitowoc | 1,432 | Community | Groundwater |
| Reedsville Waterworks | Manitowoc | 1,200 | 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, “Kellnersville Waterworks, PWSID WI4360441, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/kellnersville-waterworks-wi4360441 (data as of October 1, 2026).