Public water system · 105338101

Active

Fort Okanogan Interpretive Center

At a glance

Fort Okanogan Interpretive Center (PWSID 105338101) is an active transient non-community water system in Washington. It reports serving 50 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as Native American-owned. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in September 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

PWSID105338101

System typeTransient non-community water system

Activity statusActive

Population served50

Service connections1

Primary water sourceGroundwater

Owner typeNative American

Primacy agencyEPA Region 10

City served—

StateWashington

ZIP—

County—

How does Fort Okanogan Interpretive Center compare with other water systems in Washington?

By EPA's size categories, Fort Okanogan Interpretive Center is a very small system (500 people or fewer). 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 Fort Okanogan Interpretive Center is about 65% 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 Fort Okanogan Interpretive Center?

EPA lists Fort Okanogan Interpretive Center as Native American-owned. The EPA Region 10 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.

Does Fort Okanogan Interpretive Center have drinking water violations?

EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in September 2023. The violations listed here began between April 2015 and September 2023. By type: 4 monitoring, 3 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (5 of them). EPA lists 9 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
2023-09-16	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2023-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2023-05-31	Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D	Revised Total Coliform Rulecode 8000	Yes	Resolved
2021-08-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2018-07-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2018-06-28	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Resolved
2016-04-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2015-05-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2015-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved

All 9 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.

Fort Okanogan Interpretive Center: frequently asked questions

Who runs Fort Okanogan Interpretive Center?

Fort Okanogan Interpretive Center (PWSID 105338101) is a transient non-community water system Native American-owned. It is regulated by the EPA Region 10.

How many people does Fort Okanogan Interpretive Center serve?

Fort Okanogan Interpretive Center reports serving 50 people through 1 service connection in Washington.

Where does Fort Okanogan Interpretive Center 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 Fort Okanogan Interpretive Center have any drinking water violations?

EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in September 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 Fort Okanogan Interpretive Center'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 9 violations for this system; 1 is health-based, and the most recent began in September 2023. For current results, consult EPA ECHO, or the EPA Region 10.

Where can I find Fort Okanogan Interpretive Center's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Fort Okanogan Interpretive Center 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 Washington

Water system	County	Population served	Type	Source
Seattle Public Utilities	King	1,161,961	Community	Surface water
Tacoma Water Division City of	Pierce	446,170	Community	Surface water
Vancouver City of	Clark	373,047	Community	Groundwater
Spokane City of	Spokane	346,138	Community	Groundwater
Bellevue City of	King	321,349	Community	Purchased surface water
Alderwood Water District	Snohomish	245,715	Community	Purchased 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, “Fort Okanogan Interpretive Center, PWSID 105338101, Washington”, https://aquacensus.com/water-systems/washington/fort-okanogan-interpretive-center-105338101 (data as of October 1, 2026).