Public water system · WI8660093
ActiveStresau Lab
At a glance
Stresau Lab (PWSID WI8660093) is an active non-transient non-community water system in Washburn County, Wisconsin. It reports serving 60 people through 2 service connections. 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 July 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
60
Service connections
2
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Stresau Lab compare with other water systems in Washburn County?
By EPA's size categories, Stresau Lab is a very small system (500 people or fewer). Washburn County has 128 active public water systems. Its population served is about 20% below the county average of 75 people per system, and accounts for 0.6% of the 9,565 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 Stresau Lab 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. 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 Stresau Lab?
EPA lists Stresau Lab 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. 105 of the 128 active systems in Washburn County (82%) are also privately owned.
Does Stresau Lab have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2022. The violations listed here began between July 1993 and July 2022. By type: 4 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Lead and Copper Rule (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 |
|---|---|---|---|---|
| 2022-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | 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.
Stresau Lab: frequently asked questions
Who runs Stresau Lab?
Stresau Lab (PWSID WI8660093) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Stresau Lab serve?
Stresau Lab reports serving 60 people through 2 service connections in Washburn County, Wisconsin.
Where does Stresau Lab 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 Stresau Lab have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2022. 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 Stresau Lab'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 July 2022. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Stresau Lab's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Stresau Lab 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 Washburn County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Spooner Waterworks | Washburn | 2,653 | Community | Groundwater |
| Shell Lake Waterworks | Washburn | 950 | Community | Groundwater |
| Minong Waterworks | Washburn | 561 | Community | Groundwater |
| Birchwood Waterworks | Washburn | 442 | Community | Groundwater |
| Northwood School | Washburn | 350 | Non-transient non-community | Groundwater |
| Birch Trail Camp for Girls Main Well | Washburn | 300 | Transient non-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, “Stresau Lab, PWSID WI8660093, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/stresau-lab-wi8660093 (data as of October 1, 2026).