Public water system · WA5388387
ActiveTimberline Estates
At a glance
Timberline Estates (PWSID WA5388387) is an active transient non-community water system in Grays Harbor County, Washington. It reports serving 14 people through 16 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
14
Service connections
16
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Timberline Estates compare with other water systems in Grays Harbor County?
By EPA's size categories, Timberline Estates is a very small system (500 people or fewer). Grays Harbor County has 88 active public water systems. Its population served is well below the county average of 1,013 people per system, and accounts for less than 0.1% of the 89,150 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 Timberline Estates 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 Timberline Estates?
EPA lists Timberline Estates 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. 62 of the 88 active systems in Grays Harbor County (70%) are also privately owned.
Does Timberline Estates have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2020. The violations listed here began between August 2000 and January 2020. By type: 10 monitoring and reporting and 2 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 8 as resolved and 4 as archived. 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. 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 |
|---|---|---|---|---|
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2010-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2004-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2000-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2000-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
The 12 most recent 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.
Timberline Estates: frequently asked questions
Who runs Timberline Estates?
Timberline Estates (PWSID WA5388387) is a transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Timberline Estates serve?
Timberline Estates reports serving 14 people through 16 service connections in Grays Harbor County, Washington.
Where does Timberline Estates 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 Timberline Estates have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2020. 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 Timberline Estates' 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2020. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Timberline Estates' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Timberline Estates 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 Grays Harbor County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aberdeen City of | Grays Harbor | 22,867 | Community | Surface water |
| Hoquiam Water Department | Grays Harbor | 11,456 | Community | Surface water |
| Ocean Shores Water Dept | Grays Harbor | 9,347 | Community | Groundwater |
| Elma City of | Grays Harbor | 6,638 | Community | Groundwater |
| Montesano City of | Grays Harbor | 6,204 | Community | Groundwater |
| Westport Water Department | Grays Harbor | 5,346 | 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, “Timberline Estates, PWSID WA5388387, Washington”, https://aquacensus.com/water-systems/washington/timberline-estates-wa5388387 (data as of October 1, 2026).