Public water system · WI4200429
ActiveFond Du Lac Tn Water Utility
At a glance
Fond Du Lac Tn Water Utility (PWSID WI4200429) is an active community water system in Fond du Lac County, Wisconsin. It reports serving 980 people through 193 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
980
Service connections
193
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Fond Du Lac Tn Water Utility compare with other water systems in Fond du Lac County?
By EPA's size categories, Fond Du Lac Tn Water Utility is a small system (501 to 3,300 people). Fond du Lac County has 207 active public water systems. Its population served is about 133% above the county average of 421 people per system, and accounts for 1.1% of the 87,145 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 Fond Du Lac Tn Water Utility 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 15 Wisconsin systems (0.1%) list purchased groundwater as their primary source.
Who owns and regulates Fond Du Lac Tn Water Utility?
EPA lists Fond Du Lac Tn Water Utility 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. 26 of the 207 active systems in Fond du Lac County (13%) are also owned by a local government.
Does Fond Du Lac Tn Water Utility have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2024. The violations listed here began between April 2009 and October 2024. By type: 6 public notice, recordkeeping or other, 4 monitoring and reporting, 1 required treatment not met and 1 reporting. The contaminant or rule involved most often is Consumer Confidence Rule (4 of them). EPA lists 11 as resolved and 1 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 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 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 |
| 2021-02-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2020-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2012-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2012-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2011-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2010-07-02 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Resolved |
| 2009-04-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Haloacetic acids (HAA5)code 2456 | 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.
Fond Du Lac Tn Water Utility: frequently asked questions
Who runs Fond Du Lac Tn Water Utility?
Fond Du Lac Tn Water Utility (PWSID WI4200429) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Fond Du Lac Tn Water Utility serve?
Fond Du Lac Tn Water Utility reports serving 980 people through 193 service connections in Fond du Lac County, Wisconsin.
Where does Fond Du Lac Tn Water Utility get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Fond Du Lac Tn Water Utility have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is 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 Fond Du Lac Tn Water Utility'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Fond Du Lac Tn Water Utility's water quality report?
As a community water system, Fond Du Lac Tn Water Utility 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 Fond du Lac County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fond Du Lac Waterworks | Fond du Lac | 44,678 | Community | Groundwater |
| Ripon Water Utility | Fond du Lac | 7,716 | Community | Groundwater |
| North Fond Du Lac Waterworks | Fond du Lac | 5,414 | Community | Groundwater |
| Campbellsport Waterworks | Fond du Lac | 1,825 | Community | Groundwater |
| Oakfield Waterworks | Fond du Lac | 1,058 | Community | Groundwater |
| Ashwood Grove Edgewater | Fond du Lac | 1,046 | 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, “Fond Du Lac Tn Water Utility, PWSID WI4200429, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/fond-du-lac-tn-water-utility-wi4200429 (data as of October 1, 2026).