Public water system · WI6170268
ActiveMenomonie Waterworks
At a glance
Menomonie Waterworks (PWSID WI6170268) is an active community water system in Dunn County, Wisconsin. It reports serving 15,950 people through 4,206 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, none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
15,950
Service connections
4,206
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Menomonie Waterworks compare with other water systems in Dunn County?
By EPA's size categories, Menomonie Waterworks is a large system (10,001 to 100,000 people). Dunn County has 86 active public water systems, and Menomonie Waterworks is the largest of them by population served. Its population served is about 52 times the county average of 305 people per system, and accounts for 61% of the 26,187 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 Menomonie Waterworks is about 138% above 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 Menomonie Waterworks?
EPA lists Menomonie 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. 15 of the 86 active systems in Dunn County (17%) are also owned by a local government.
Does Menomonie Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2025. The violations listed here began between April 2019 and July 2025. By type: 11 monitoring and reporting and 1 reporting. The contaminants or rules involved are Lead and Copper Rule Revisions, 1,1,2-Trichloroethane, trans-1,2-Dichloroethylene and o-Dichlorobenzene. 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | 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.
Menomonie Waterworks: frequently asked questions
Who runs Menomonie Waterworks?
Menomonie Waterworks (PWSID WI6170268) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Menomonie Waterworks serve?
Menomonie Waterworks reports serving 15,950 people through 4,206 service connections in Dunn County, Wisconsin.
Where does Menomonie 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 Menomonie Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2025. 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 Menomonie 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, none is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Menomonie Waterworks' water quality report?
As a community water system, Menomonie 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 Dunn County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Colfax Waterworks | Dunn | 1,102 | Community | Groundwater |
| Boyceville Waterworks | Dunn | 1,043 | Community | Groundwater |
| Elk Mound Waterworks | Dunn | 895 | Community | Groundwater |
| Birch Terrace Mobile Home Community | Dunn | 700 | Community | Groundwater |
| Knapp Waterworks | Dunn | 486 | Community | Groundwater |
| Synergy Cooperative - Ridgeland | Dunn | 475 | Transient non-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, “Menomonie Waterworks, PWSID WI6170268, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/menomonie-waterworks-wi6170268 (data as of October 1, 2026).