Public water system · WI2461091
ActiveWelcome Mart
At a glance
Welcome Mart (PWSID WI2461091) is an active transient non-community water system in Ozaukee County, Wisconsin. It reports serving 405 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 1997.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
405
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Welcome Mart compare with other water systems in Ozaukee County?
By EPA's size categories, Welcome Mart is a very small system (500 people or fewer). Ozaukee County has 249 active public water systems. Its population served is roughly in line with the county average of 371 people per system, and accounts for 0.4% of the 92,392 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Welcome Mart is about 181% above 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. Wisconsin has 9,112 active transient non-community water systems, 82% 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 Welcome Mart?
EPA lists Welcome Mart 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. 218 of the 249 active systems in Ozaukee County (88%) are also privately owned.
Does Welcome Mart have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 1997. The violations listed here began between January 1994 and January 1997. By type: 5 monitoring and reporting. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 5 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.
Welcome Mart: frequently asked questions
Who runs Welcome Mart?
Welcome Mart (PWSID WI2461091) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Welcome Mart serve?
Welcome Mart reports serving 405 people through 1 service connection in Ozaukee County, Wisconsin.
Where does Welcome Mart 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 Welcome Mart have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 1997. 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 Welcome Mart'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 5 violations for this system; none is health-based, and the most recent began in January 1997. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Welcome Mart's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Welcome Mart 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 Ozaukee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Port Washington Waterworks | Ozaukee | 12,853 | Community | Surface water |
| Cedarburg L & W Commission | Ozaukee | 12,500 | Community | Groundwater |
| Grafton Waterworks | Ozaukee | 12,269 | Community | Groundwater |
| Mequon Water Utility | Ozaukee | 11,152 | Community | Purchased surface water |
| Saukville Waterworks | Ozaukee | 4,268 | Community | Groundwater |
| Belgium Waterworks | Ozaukee | 2,493 | 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, “Welcome Mart, PWSID WI2461091, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/welcome-mart-wi2461091 (data as of October 1, 2026).