Public water system · WI4200517
ActiveMsi Express Inc.
At a glance
Msi Express Inc. (PWSID WI4200517) is an active non-transient non-community water system in Fond du Lac County, Wisconsin. It reports serving 154 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
154
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Msi Express Inc. compare with other water systems in Fond du Lac County?
By EPA's size categories, Msi Express Inc. is a very small system (500 people or fewer). Fond du Lac County has 207 active public water systems. Its population served is about 63% below the county average of 421 people per system, and accounts for 0.2% of the 87,145 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 Msi Express Inc. is about 64% 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 Msi Express Inc.?
EPA lists Msi Express Inc. as privately owned. 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. 162 of the 207 active systems in Fond du Lac County (78%) are also privately owned.
Does Msi Express Inc. have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2013. The violations listed here began between January 2012 and January 2013. By type: 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminants or rules involved are Total coliform bacteria (TCR) and Lead and Copper Rule. EPA lists 2 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 |
|---|---|---|---|---|
| 2013-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2012-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
All 2 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.
Msi Express Inc.: frequently asked questions
Who runs Msi Express Inc.?
Msi Express Inc. (PWSID WI4200517) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Msi Express Inc. serve?
Msi Express Inc. reports serving 154 people through 1 service connection in Fond du Lac County, Wisconsin.
Where does Msi Express Inc. 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 Msi Express Inc. have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2013. 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 Msi Express Inc.'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 2 violations for this system; 1 is health-based, and the most recent began in January 2013. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Msi Express Inc.'s water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Msi Express Inc. 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 Fond du Lac County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fond Du Lac Waterworks | Fond du Lac | 44,678 | Community | Groundwater |
| Ripon Water Utility | Fond du Lac | 7,716 | Community | Groundwater |
| North Fond Du Lac Waterworks | Fond du Lac | 5,414 | Community | Groundwater |
| Campbellsport Waterworks | Fond du Lac | 1,825 | Community | Groundwater |
| Oakfield Waterworks | Fond du Lac | 1,058 | Community | Groundwater |
| Ashwood Grove Edgewater | Fond du Lac | 1,046 | 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, “Msi Express Inc., PWSID WI4200517, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/msi-express-inc-wi4200517 (data as of October 1, 2026).