Public water system · MN5550212
ActiveMayowood Mansion
At a glance
Mayowood Mansion (PWSID MN5550212) is an active transient non-community water system in Olmsted County, Minnesota. It reports serving 81 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is health-based, and the most recent began in May 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
81
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mayowood Mansion compare with other water systems in Olmsted County?
By EPA's size categories, Mayowood Mansion is a very small system (500 people or fewer). Olmsted County has 81 active public water systems. Its population served is well below the county average of 1,816 people per system, and accounts for less than 0.1% of the 147,054 people reported by systems filed under the county. Across Minnesota, the 6,465 active systems average 820 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Mayowood Mansion is about 44% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Minnesota has 5,008 active transient non-community water systems, 77% of the state's 6,465 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,261 Minnesota systems (97%) list groundwater as their primary source.
Who owns and regulates Mayowood Mansion?
EPA lists Mayowood Mansion as privately owned. The MN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 72 of the 81 active systems in Olmsted County (89%) are also privately owned.
Does Mayowood Mansion have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in May 2005. 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 |
|---|---|---|---|---|
| 2005-05-01 | 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.
Mayowood Mansion: frequently asked questions
Who runs Mayowood Mansion?
Mayowood Mansion (PWSID MN5550212) is a transient non-community water system privately owned. It is regulated by the MN state drinking water program.
How many people does Mayowood Mansion serve?
Mayowood Mansion reports serving 81 people through 2 service connections in Olmsted County, Minnesota.
Where does Mayowood Mansion 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 Mayowood Mansion have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in May 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 Mayowood Mansion'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 May 2005. For current results, consult EPA ECHO, or the MN state drinking water program.
Where can I find Mayowood Mansion's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mayowood Mansion is a 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 Olmsted County
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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, “Mayowood Mansion, PWSID MN5550212, Minnesota”, https://aquacensus.com/water-systems/minnesota/mayowood-mansion-mn5550212 (data as of October 1, 2026).