Public water system · WA5377138
ActiveSeattle Yacht Club - Henry Island
At a glance
Seattle Yacht Club - Henry Island (PWSID WA5377138) is an active transient non-community water system in San Juan County, Washington. It reports serving 30 people through 11 service connections. Its primary water source is surface water, and EPA lists it as privately owned. EPA's records list 7 violations for this system; none is health-based, and the most recent began in November 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
30
Service connections
11
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Seattle Yacht Club - Henry Island compare with other water systems in San Juan County?
By EPA's size categories, Seattle Yacht Club - Henry Island is a very small system (500 people or fewer). San Juan County has 112 active public water systems. Its population served is well below the county average of 361 people per system, and accounts for less than 0.1% of the 40,377 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 Seattle Yacht Club - Henry Island 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. 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 Seattle Yacht Club - Henry Island?
EPA lists Seattle Yacht Club - Henry Island 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. 92 of the 112 active systems in San Juan County (82%) are also privately owned.
Does Seattle Yacht Club - Henry Island have drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in November 2006. The violations listed here began between May 1995 and November 2006. By type: 7 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 6 as archived and 1 as resolved. 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. 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 |
|---|---|---|---|---|
| 2006-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2006-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2006-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2005-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2000-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1995-05-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 7 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.
Seattle Yacht Club - Henry Island: frequently asked questions
Who runs Seattle Yacht Club - Henry Island?
Seattle Yacht Club - Henry Island (PWSID WA5377138) is a transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Seattle Yacht Club - Henry Island serve?
Seattle Yacht Club - Henry Island reports serving 30 people through 11 service connections in San Juan County, Washington.
Where does Seattle Yacht Club - Henry Island 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 Seattle Yacht Club - Henry Island have any drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in November 2006. 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 Seattle Yacht Club - Henry Island'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 7 violations for this system; none is health-based, and the most recent began in November 2006. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Seattle Yacht Club - Henry Island's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Seattle Yacht Club - Henry Island 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 San Juan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Moran State Park-Mountain Lake | San Juan | 4,804 | Transient non-community | Surface water |
| Moran State Park - Summit Lake | San Juan | 4,803 | Transient non-community | Groundwater under influence of surface water |
| Moran State Park-Cascade Lake | San Juan | 4,783 | Transient non-community | Surface water |
| Eastsound Water Users Association | San Juan | 3,711 | Community | Surface water |
| Friday Harbor Town of | San Juan | 3,543 | Community | Surface water |
| Limekiln State Park | San Juan | 2,149 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Seattle Yacht Club - Henry Island, PWSID WA5377138, Washington”, https://aquacensus.com/water-systems/washington/seattle-yacht-club-henry-island-wa5377138 (data as of October 1, 2026).