Public water system · WA5367605
ActiveRobison Tract / Teeny
At a glance
Robison Tract / Teeny (PWSID WA5367605) is an active transient non-community water system in Chelan County, Washington. It reports serving 32 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; 3 are health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
32
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Robison Tract / Teeny compare with other water systems in Chelan County?
By EPA's size categories, Robison Tract / Teeny is a very small system (500 people or fewer). Chelan County has 131 active public water systems. Its population served is well below the county average of 931 people per system, and accounts for less than 0.1% of the 121,966 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Robison Tract / Teeny 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. Washington has 1,913 active transient non-community water systems, 41% of the state's 4,705 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,370 Washington systems (93%) list groundwater as their primary source.
Who owns and regulates Robison Tract / Teeny?
EPA lists Robison Tract / Teeny as privately owned. The WA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 100 of the 131 active systems in Chelan County (76%) are also privately owned.
Does Robison Tract / Teeny have drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in April 2025. The violations listed here began between July 1992 and April 2025. By type: 3 contaminant level above the legal limit, 1 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 as archived and 1 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2025-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1993-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-08-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
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.
Robison Tract / Teeny: frequently asked questions
Who runs Robison Tract / Teeny?
Robison Tract / Teeny (PWSID WA5367605) is a transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Robison Tract / Teeny serve?
Robison Tract / Teeny reports serving 32 people through 1 service connection in Chelan County, Washington.
Where does Robison Tract / Teeny 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 Robison Tract / Teeny have any drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in April 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 Robison Tract / Teeny'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; 3 are health-based, and the most recent began in April 2025. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Robison Tract / Teeny's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Robison Tract / Teeny 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 Chelan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wenatchee City of | Chelan | 43,690 | Community | Groundwater |
| Chelan Co PUD 1 | Chelan | 16,190 | Community | Purchased groundwater |
| Leavenworth City of | Chelan | 11,041 | Community | Surface water |
| Chelan Water Dept City of | Chelan | 9,425 | Community | Surface water |
| Lake Chelan Reclamation District | Chelan | 6,798 | Community | Surface water |
| Cashmere Water Department | Chelan | 5,815 | Community | Surface water |
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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, “Robison Tract / Teeny, PWSID WA5367605, Washington”, https://aquacensus.com/water-systems/washington/robison-tract-teeny-wa5367605 (data as of October 1, 2026).