Public water system · WI8660505
ActiveTrego Lake Park and Campground Backup
At a glance
Trego Lake Park and Campground Backup (PWSID WI8660505) is an active transient non-community water system in Washburn County, Wisconsin. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in May 1999.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Trego Lake Park and Campground Backup compare with other water systems in Washburn County?
By EPA's size categories, Trego Lake Park and Campground Backup is a very small system (500 people or fewer). Washburn County has 128 active public water systems. Its population served is about 67% below the county average of 75 people per system, and accounts for 0.3% 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 transient non-community water system reports serving 144 people, so Trego Lake Park and Campground Backup is well below 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 Trego Lake Park and Campground Backup?
EPA lists Trego Lake Park and Campground Backup as owned by a local government. 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. 16 of the 128 active systems in Washburn County (13%) are also owned by a local government.
Does Trego Lake Park and Campground Backup have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in May 1999. The violations listed here began between April 1998 and May 1999. By type: 4 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 1999-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-05-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1998-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 4 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.
Trego Lake Park and Campground Backup: frequently asked questions
Who runs Trego Lake Park and Campground Backup?
Trego Lake Park and Campground Backup (PWSID WI8660505) is a transient non-community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Trego Lake Park and Campground Backup serve?
Trego Lake Park and Campground Backup reports serving 25 people through 1 service connection in Washburn County, Wisconsin.
Where does Trego Lake Park and Campground Backup 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 Trego Lake Park and Campground Backup have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in May 1999. 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 Trego Lake Park and Campground Backup'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 4 violations for this system; none is health-based, and the most recent began in May 1999. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Trego Lake Park and Campground Backup's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Trego Lake Park and Campground Backup 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 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, “Trego Lake Park and Campground Backup, PWSID WI8660505, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/trego-lake-park-and-campground-backup-wi8660505 (data as of October 1, 2026).