Public water system · WI4600615
ActiveJohnsonville Riverside Plant
At a glance
Johnsonville Riverside Plant (PWSID WI4600615) is an active non-transient non-community water system in Sheboygan County, Wisconsin. It reports serving 160 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 7 violations for this system; 2 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
160
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Johnsonville Riverside Plant compare with other water systems in Sheboygan County?
By EPA's size categories, Johnsonville Riverside Plant is a very small system (500 people or fewer). Sheboygan County has 215 active public water systems. Its population served is well below the county average of 559 people per system, and accounts for 0.1% 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 non-transient non-community water system reports serving 430 people, so Johnsonville Riverside Plant is about 63% below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Wisconsin has 891 active non-transient non-community water systems, 8.1% 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 Johnsonville Riverside Plant?
EPA lists Johnsonville Riverside Plant as privately owned. 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. 166 of the 215 active systems in Sheboygan County (77%) are also privately owned.
Does Johnsonville Riverside Plant have drinking water violations?
EPA's records list 7 violations for this system; 2 are health-based, and the most recent began in October 2024. The violations listed here began between July 2004 and October 2024. By type: 3 public notice, recordkeeping or other, 1 required treatment not met, 1 reporting, 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 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 |
| 2008-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 7 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.
Johnsonville Riverside Plant: frequently asked questions
Who runs Johnsonville Riverside Plant?
Johnsonville Riverside Plant (PWSID WI4600615) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Johnsonville Riverside Plant serve?
Johnsonville Riverside Plant reports serving 160 people through 1 service connection in Sheboygan County, Wisconsin.
Where does Johnsonville Riverside Plant 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 Johnsonville Riverside Plant have any drinking water violations?
EPA's records list 7 violations for this system; 2 are health-based, and the most recent began in October 2024. 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 Johnsonville Riverside Plant's 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 7 violations for this system; 2 are health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Johnsonville Riverside Plant's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Johnsonville Riverside Plant is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
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 |
| Oostburg Waterworks | Sheboygan | 3,110 | Community | Groundwater |
| Kohler Waterworks | Sheboygan | 2,271 | Community | Purchased surface water |
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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, “Johnsonville Riverside Plant, PWSID WI4600615, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/johnsonville-riverside-plant-wi4600615 (data as of October 1, 2026).