Public water system · WA53AE047
ActivePse Whitehorn
At a glance
Pse Whitehorn (PWSID WA53AE047) is an active non-transient non-community water system in Whatcom County, Washington. It reports serving 25 people through 1 service connection. Its primary water source is surface water, 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 August 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
SW
Surface water
System type
NTNCWS
Non-transient non-community water system
System record
How does Pse Whitehorn compare with other water systems in Whatcom County?
By EPA's size categories, Pse Whitehorn is a very small system (500 people or fewer). Whatcom County has 183 active public water systems. Its population served is well below the county average of 1,437 people per system, and accounts for less than 0.1% of the 263,011 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 Pse Whitehorn is well 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 140 Washington systems (3%) list surface water as their primary source.
Who owns and regulates Pse Whitehorn?
EPA lists Pse Whitehorn 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. 140 of the 183 active systems in Whatcom County (77%) are also privately owned.
Does Pse Whitehorn have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in August 2022. By type: 1 monitoring. The contaminant or rule involved is Revised Total Coliform Rule. 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 |
|---|---|---|---|---|
| 2022-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Pse Whitehorn: frequently asked questions
Who runs Pse Whitehorn?
Pse Whitehorn (PWSID WA53AE047) is a non-transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Pse Whitehorn serve?
Pse Whitehorn reports serving 25 people through 1 service connection in Whatcom County, Washington.
Where does Pse Whitehorn get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Pse Whitehorn 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 August 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 Pse Whitehorn'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 August 2022. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Pse Whitehorn's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Pse Whitehorn 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 Whatcom County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bellingham-Water Division City of | Whatcom | 141,127 | Community | Surface water |
| Lynden Water Department | Whatcom | 20,062 | Community | Surface water |
| Ferndale | Whatcom | 19,305 | Community | Groundwater |
| Lwwsd - South Shore Water System | Whatcom | 10,028 | Community | Surface water |
| Birch Bay Water & Sewer District | Whatcom | 9,046 | Community | Purchased groundwater |
| Blaine City of | Whatcom | 6,319 | 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, “Pse Whitehorn, PWSID WA53AE047, Washington”, https://aquacensus.com/water-systems/washington/pse-whitehorn-wa53ae047 (data as of October 1, 2026).