Public water system · WA53FS668
ActiveChinook Pass Work Center
At a glance
Chinook Pass Work Center (PWSID WA53FS668) is an active transient non-community water system in Yakima County, Washington. It reports serving 62 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 1979.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
62
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Chinook Pass Work Center compare with other water systems in Yakima County?
By EPA's size categories, Chinook Pass Work Center is a very small system (500 people or fewer). Yakima County has 217 active public water systems. Its population served is well below the county average of 1,230 people per system, and accounts for less than 0.1% of the 266,832 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 Chinook Pass Work Center is about 57% 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 Chinook Pass Work Center?
EPA lists Chinook Pass Work Center as owned by the federal 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. 8 of the 217 active systems in Yakima County (3.7%) are also owned by the federal government.
Does Chinook Pass Work Center have drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 1979. The violations listed here began between October 1979 and October 1979. By type: 9 monitoring and reporting. The contaminants or rules involved are Gross alpha (excluding radon and uranium), Mercury, Selenium and Nitrate. EPA lists 9 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Archived |
All 9 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.
Chinook Pass Work Center: frequently asked questions
Who runs Chinook Pass Work Center?
Chinook Pass Work Center (PWSID WA53FS668) is a transient non-community water system owned by the federal government. It is regulated by the WA state drinking water program.
How many people does Chinook Pass Work Center serve?
Chinook Pass Work Center reports serving 62 people through 2 service connections in Yakima County, Washington.
Where does Chinook Pass Work Center 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 Chinook Pass Work Center have any drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 1979. 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 Chinook Pass Work Center'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 9 violations for this system; none is health-based, and the most recent began in October 1979. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Chinook Pass Work Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Chinook Pass Work Center 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 Yakima County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Yakima Water Division City of | Yakima | 112,858 | Community | Surface water |
| Nob Hill Water Association | Yakima | 38,050 | Community | Groundwater |
| Sunnyside City of | Yakima | 17,194 | Community | Groundwater |
| Grandview City of | Yakima | 11,010 | Community | Groundwater |
| Selah City of | Yakima | 9,331 | Community | Groundwater |
| Toppenish Water Department | Yakima | 8,950 | 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, “Chinook Pass Work Center, PWSID WA53FS668, Washington”, https://aquacensus.com/water-systems/washington/chinook-pass-work-center-wa53fs668 (data as of October 1, 2026).