Public water system · WA53AB747

Active

Sequim Seventh Day Adventist

At a glance

Sequim Seventh Day Adventist (PWSID WA53AB747) is an active transient non-community water system in Clallam County, Washington. It reports serving 55 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in June 2023.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDWA53AB747

System typeTransient non-community water system

Activity statusActive

Population served55

Service connections2

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyWA state drinking water program

City served—

StateWashington

ZIP—

CountyClallam County

How does Sequim Seventh Day Adventist compare with other water systems in Clallam County?

By EPA's size categories, Sequim Seventh Day Adventist is a very small system (500 people or fewer). Clallam County has 100 active public water systems. Its population served is well below the county average of 879 people per system, and accounts for less than 0.1% of the 87,933 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 Sequim Seventh Day Adventist is about 62% 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 Sequim Seventh Day Adventist?

EPA lists Sequim Seventh Day Adventist 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. 75 of the 100 active systems in Clallam County (75%) are also privately owned.

Does Sequim Seventh Day Adventist have drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in June 2023. The violations listed here began between January 2007 and June 2023. By type: 4 monitoring and reporting, 3 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 8 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
2023-06-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2017-02-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2016-11-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2013-10-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2010-07-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2010-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
2007-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved

All 8 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.

Sequim Seventh Day Adventist: frequently asked questions

Who runs Sequim Seventh Day Adventist?

Sequim Seventh Day Adventist (PWSID WA53AB747) is a transient non-community water system privately owned. It is regulated by the WA state drinking water program.

How many people does Sequim Seventh Day Adventist serve?

Sequim Seventh Day Adventist reports serving 55 people through 2 service connections in Clallam County, Washington.

Where does Sequim Seventh Day Adventist 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 Sequim Seventh Day Adventist have any drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in June 2023. 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 Sequim Seventh Day Adventist'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 8 violations for this system; 1 is health-based, and the most recent began in June 2023. For current results, consult EPA ECHO, or the WA state drinking water program.

Where can I find Sequim Seventh Day Adventist's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Sequim Seventh Day Adventist 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 Clallam County

Water system	County	Population served	Type	Source
Port Angeles City of	Clallam	28,067	Community	Surface water
Sequim City of	Clallam	14,293	Community	Groundwater
Port Angeles Composite	Clallam	8,872	Community	Surface water
Forks Municipal Water Dept	Clallam	3,468	Community	Groundwater
Dry Creek Water Association	Clallam	3,030	Community	Groundwater
West Sequim Bay Inc.	Clallam	2,759	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, “Sequim Seventh Day Adventist, PWSID WA53AB747, Washington”, https://aquacensus.com/water-systems/washington/sequim-seventh-day-adventist-wa53ab747 (data as of October 1, 2026).