Public water system · WA5329460
ActiveGreen Mountain Mill Weyerhaeuser
At a glance
Green Mountain Mill Weyerhaeuser (PWSID WA5329460) is an active non-transient non-community water system in Cowlitz County, Washington. It reports serving 145 people through 8 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in May 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
145
Service connections
8
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Green Mountain Mill Weyerhaeuser compare with other water systems in Cowlitz County?
By EPA's size categories, Green Mountain Mill Weyerhaeuser is a very small system (500 people or fewer). Cowlitz County has 77 active public water systems. Its population served is well below the county average of 1,628 people per system, and accounts for 0.1% of the 125,351 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Green Mountain Mill Weyerhaeuser is about 66% 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. Washington has 400 active non-transient non-community water systems, 8.5% 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 Green Mountain Mill Weyerhaeuser?
EPA lists Green Mountain Mill Weyerhaeuser 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. 58 of the 77 active systems in Cowlitz County (75%) are also privately owned.
Does Green Mountain Mill Weyerhaeuser have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in May 1996. By type: 1 monitoring and reporting. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 1996-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Green Mountain Mill Weyerhaeuser: frequently asked questions
Who runs Green Mountain Mill Weyerhaeuser?
Green Mountain Mill Weyerhaeuser (PWSID WA5329460) is a non-transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Green Mountain Mill Weyerhaeuser serve?
Green Mountain Mill Weyerhaeuser reports serving 145 people through 8 service connections in Cowlitz County, Washington.
Where does Green Mountain Mill Weyerhaeuser 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 Green Mountain Mill Weyerhaeuser 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 May 1996. 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 Green Mountain Mill Weyerhaeuser'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 May 1996. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Green Mountain Mill Weyerhaeuser's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Green Mountain Mill Weyerhaeuser 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 Cowlitz County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Longview Water Department | Cowlitz | 57,617 | Community | Groundwater |
| Kelso City of | Cowlitz | 15,775 | Community | Groundwater under influence of surface water |
| Beacon Hill Water & Sewer District | Cowlitz | 11,969 | Community | Purchased groundwater |
| Woodland City of | Cowlitz | 10,640 | Community | Groundwater under influence of surface water |
| Kalama City of | Cowlitz | 8,020 | Community | Groundwater under influence of surface water |
| Castle Rock Municipal Water | Cowlitz | 4,367 | 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, “Green Mountain Mill Weyerhaeuser, PWSID WA5329460, Washington”, https://aquacensus.com/water-systems/washington/green-mountain-mill-weyerhaeuser-wa5329460 (data as of October 1, 2026).