Public water system · WA53AD864
ActiveOmak Omk City of
At a glance
City of Omak Omk (PWSID WA53AD864) is an active transient non-community water system in Okanogan County, Washington. It reports serving 31 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in January 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
31
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does City of Omak Omk compare with other water systems in Okanogan County?
By EPA's size categories, City of Omak Omk is a very small system (500 people or fewer). Okanogan County has 119 active public water systems. Its population served is well below the county average of 383 people per system, and accounts for less than 0.1% of the 45,608 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 City of Omak Omk 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 City of Omak Omk?
EPA lists City of Omak Omk as owned by a local government. 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. 16 of the 119 active systems in Okanogan County (13%) are also owned by a local government.
Does City of Omak Omk have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in January 2022. By type: 1 monitoring and reporting. The contaminant or rule involved is Nitrate. EPA lists 1 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 |
|---|---|---|---|---|
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
The one violation in EPA's records.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.
City of Omak Omk: frequently asked questions
Who runs City of Omak Omk?
City of Omak Omk (PWSID WA53AD864) is a transient non-community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does City of Omak Omk serve?
City of Omak Omk reports serving 31 people through 2 service connections in Okanogan County, Washington.
Where does City of Omak Omk 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 City of Omak Omk have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in January 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 City of Omak Omk'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 one violation for this system; it is not health-based, and the most recent began in January 2022. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find City of Omak Omk's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. City of Omak Omk 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 Okanogan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Omak City of | Okanogan | 4,940 | Community | Groundwater |
| Brewster City of | Okanogan | 3,843 | Community | Groundwater |
| Okanogan Water Department City of | Okanogan | 3,817 | Community | Groundwater |
| Oroville City of | Okanogan | 3,256 | Community | Groundwater |
| Tonasket Water System | Okanogan | 2,398 | Community | Groundwater |
| Pearrygin Lake State Park - Both Cg | Okanogan | 2,103 | 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, “Omak Omk City of, PWSID WA53AD864, Washington”, https://aquacensus.com/water-systems/washington/omak-omk-city-of-wa53ad864 (data as of October 1, 2026).