Public water system · WI7720994
ActiveMilladore Waterworks
At a glance
Milladore Waterworks (PWSID WI7720994) is an active community water system in Wood County, Wisconsin. It reports serving 280 people through 123 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in September 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
280
Service connections
123
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Milladore Waterworks compare with other water systems in Wood County?
By EPA's size categories, Milladore Waterworks is a very small system (500 people or fewer). Wood County has 148 active public water systems. Its population served is about 29% below the county average of 396 people per system, and accounts for 0.5% of the 58,534 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 Milladore 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 Milladore Waterworks?
EPA lists Milladore 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. 42 of the 148 active systems in Wood County (28%) are also owned by a local government.
Does Milladore Waterworks have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in September 2005. The violations listed here began between September 1998 and September 2005. By type: 2 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2005-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 1998-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 4 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.
Milladore Waterworks: frequently asked questions
Who runs Milladore Waterworks?
Milladore Waterworks (PWSID WI7720994) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Milladore Waterworks serve?
Milladore Waterworks reports serving 280 people through 123 service connections in Wood County, Wisconsin.
Where does Milladore 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 Milladore Waterworks have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in September 2005. 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 Milladore 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 4 violations for this system; 2 are health-based, and the most recent began in September 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Milladore Waterworks' water quality report?
As a community water system, Milladore 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 Wood County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wis Rapids Water Works & Lighting Comm | Wood | 20,000 | Community | Groundwater |
| Marshfield Utilities | Wood | 18,815 | Community | Groundwater |
| Nekoosa Waterworks | Wood | 2,394 | Community | Groundwater |
| Port Edwards Water Utility | Wood | 1,866 | Community | Groundwater |
| Biron Water Utility | Wood | 879 | Community | Groundwater |
| Pittsville Waterworks | Wood | 800 | 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, “Milladore Waterworks, PWSID WI7720994, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/milladore-waterworks-wi7720994 (data as of October 1, 2026).