Public water system · OR4101510

Active

Wapato Moorage Association

At a glance

Wapato Moorage Association (PWSID OR4101510) is an active community water system in Multnomah County, Oregon. It reports serving 74 people through 37 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2024.

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

Population served

Service connections

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDOR4101510

System typeCommunity water system

Activity statusActive

Population served74

Service connections37

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyOR state drinking water program

City served—

StateOregon

ZIP—

CountyMultnomah County

How does Wapato Moorage Association compare with other water systems in Multnomah County?

By EPA's size categories, Wapato Moorage Association is a very small system (500 people or fewer). Multnomah County has 58 active public water systems. Its population served is well below the county average of 14,736 people per system, and accounts for less than 0.1% of the 854,671 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active community water system reports serving 6,703 people, so Wapato Moorage Association is well below that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Oregon has 940 active community water systems, 37% of the state's 2,536 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,175 Oregon systems (86%) list groundwater as their primary source.

Who owns and regulates Wapato Moorage Association?

EPA lists Wapato Moorage Association as privately owned. The OR state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 27 of the 58 active systems in Multnomah County (47%) are also privately owned.

Does Wapato Moorage Association have drinking water violations?

EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2024. The violations listed here began between January 2008 and July 2024. By type: 7 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 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
2024-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2015-11-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2015-09-18	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Resolved
2014-11-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Gross alpha (excluding radon and uranium)code 4000	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Combined Radium (-226 and -228)code 4010	No	Resolved
2010-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2008-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	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.

Wapato Moorage Association: frequently asked questions

Who runs Wapato Moorage Association?

Wapato Moorage Association (PWSID OR4101510) is a community water system privately owned. It is regulated by the OR state drinking water program.

How many people does Wapato Moorage Association serve?

Wapato Moorage Association reports serving 74 people through 37 service connections in Multnomah County, Oregon.

Where does Wapato Moorage Association 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 Wapato Moorage Association have any drinking water violations?

EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2024. 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 Wapato Moorage Association'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 July 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.

Where can I find Wapato Moorage Association's water quality report?

As a community water system, Wapato Moorage Association must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Multnomah County

Water system	County	Population served	Type	Source
Portland Water Bureau	Multnomah	666,200	Community	Surface water
Gresham, City of	Multnomah	73,932	Community	Purchased surface water
Rockwood PUD	Multnomah	65,443	Community	Purchased surface water
Troutdale, City of	Multnomah	16,185	Community	Groundwater
Fairview, City of	Multnomah	9,963	Community	Groundwater
Wood Village, City of	Multnomah	4,388	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, “Wapato Moorage Association, PWSID OR4101510, Oregon”, https://aquacensus.com/water-systems/oregon/wapato-moorage-association-or4101510 (data as of October 1, 2026).