Public water system · WI7641114
ActiveOak Tree Early Learning Center LLC
At a glance
Oak Tree Early Learning Center LLC (PWSID WI7641114) is an active non-transient non-community water system in Vilas County, Wisconsin. It reports serving 116 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
116
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Oak Tree Early Learning Center LLC compare with other water systems in Vilas County?
By EPA's size categories, Oak Tree Early Learning Center LLC is a very small system (500 people or fewer). Vilas County has 460 active public water systems. Its population served is about 27% above the county average of 91 people per system, and accounts for 0.3% of the 42,009 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 Oak Tree Early Learning Center 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. 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 Oak Tree Early Learning Center LLC?
EPA lists Oak Tree Early Learning Center LLC 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. 377 of the 460 active systems in Vilas County (82%) are also privately owned.
Does Oak Tree Early Learning Center LLC have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between October 2025 and October 2025. By type: 12 monitoring and reporting. The contaminants or rules involved are Dichloromethane, Carbon tetrachloride, Benzene and 1,1,1-Trichloroethane. EPA lists 12 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
The 12 most recent 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.
Oak Tree Early Learning Center LLC: frequently asked questions
Who runs Oak Tree Early Learning Center LLC?
Oak Tree Early Learning Center LLC (PWSID WI7641114) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Oak Tree Early Learning Center LLC serve?
Oak Tree Early Learning Center LLC reports serving 116 people through 1 service connection in Vilas County, Wisconsin.
Where does Oak Tree Early Learning Center 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 Oak Tree Early Learning Center LLC have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. 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 Oak Tree Early Learning Center 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Oak Tree Early Learning Center LLC's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Oak Tree Early Learning Center 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 Vilas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Eagle River Waterworks | Vilas | 1,530 | Community | Groundwater |
| Arbor Vitae Woodruff El Sch | Vilas | 575 | Non-transient non-community | Groundwater |
| Phelps Sanitary District | Vilas | 550 | Community | Groundwater |
| Wi Dnr Crystal Lk Shower | Vilas | 540 | Transient non-community | Groundwater |
| Land O Lakes Sanitary Dist | Vilas | 450 | Community | Groundwater |
| Camp Ramah Office | Vilas | 400 | 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, “Oak Tree Early Learning Center LLC, PWSID WI7641114, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/oak-tree-early-learning-center-llc-wi7641114 (data as of October 1, 2026).