Public water system · MN5550216
ActiveDomaille Engineering LLC
At a glance
Domaille Engineering LLC (PWSID MN5550216) is an active non-transient non-community water system in Olmsted County, Minnesota. It reports serving 120 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 October 1991.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
120
Service connections
2
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Domaille Engineering LLC compare with other water systems in Olmsted County?
By EPA's size categories, Domaille Engineering LLC 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 non-transient non-community water system reports serving 430 people, so Domaille Engineering LLC is well 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. Minnesota has 470 active non-transient non-community water systems, 7.3% 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 Domaille Engineering LLC?
EPA lists Domaille Engineering LLC 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 Domaille Engineering LLC have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 1991. 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 |
|---|---|---|---|---|
| 1991-10-01 | 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.
Domaille Engineering LLC: frequently asked questions
Who runs Domaille Engineering LLC?
Domaille Engineering LLC (PWSID MN5550216) is a non-transient non-community water system privately owned. It is regulated by the MN state drinking water program.
How many people does Domaille Engineering LLC serve?
Domaille Engineering LLC reports serving 120 people through 2 service connections in Olmsted County, Minnesota.
Where does Domaille Engineering LLC 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 Domaille Engineering LLC 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 1991. 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 Domaille Engineering LLC'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 1991. For current results, consult EPA ECHO, or the MN state drinking water program.
Where can I find Domaille Engineering LLC's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Domaille Engineering LLC 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 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, “Domaille Engineering LLC, PWSID MN5550216, Minnesota”, https://aquacensus.com/water-systems/minnesota/domaille-engineering-llc-mn5550216 (data as of October 1, 2026).