Public water system · WI1131341
ActiveMckay Center
At a glance
Mckay Center (PWSID WI1131341) is an active non-transient non-community water system in Dane County, Wisconsin. It reports serving 250 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list one violation for this system; it is health-based, and the most recent began in October 2000.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mckay Center compare with other water systems in Dane County?
By EPA's size categories, Mckay Center is a very small system (500 people or fewer). Dane County has 300 active public water systems. Its population served is well below the county average of 1,742 people per system, and accounts for less than 0.1% of the 522,696 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 Mckay Center is about 42% 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 Mckay Center?
EPA lists Mckay Center as owned by a state 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 300 active systems in Dane County (5%) are also owned by a state government.
Does Mckay Center have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 2000. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 2000-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The one violation in EPA's records.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.
Mckay Center: frequently asked questions
Who runs Mckay Center?
Mckay Center (PWSID WI1131341) is a non-transient non-community water system owned by a state government. It is regulated by the WI state drinking water program.
How many people does Mckay Center serve?
Mckay Center reports serving 250 people through 1 service connection in Dane County, Wisconsin.
Where does Mckay Center 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 Mckay Center have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 2000. 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 Mckay Center'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 one violation for this system; it is health-based, and the most recent began in October 2000. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Mckay Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mckay Center 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 Dane County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Madison Water Utility | Dane | 272,000 | Community | Groundwater |
| Sun Prairie Utilities | Dane | 39,300 | Community | Groundwater |
| Fitchburg Utility Dist 1 | Dane | 24,500 | Community | Groundwater |
| Middleton Waterworks | Dane | 23,868 | Community | Groundwater |
| Waunakee Waterworks | Dane | 14,879 | Community | Groundwater |
| Verona Waterworks | Dane | 14,030 | 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, “Mckay Center, PWSID WI1131341, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/mckay-center-wi1131341 (data as of October 1, 2026).