Public water system · OR4101411
ActiveDikeside Moorage
At a glance
Dikeside Moorage (PWSID OR4101411) is an active community water system in Columbia County, Oregon. It reports serving 45 people through 29 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in November 2012.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
45
Service connections
29
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Dikeside Moorage compare with other water systems in Columbia County?
By EPA's size categories, Dikeside Moorage is a very small system (500 people or fewer). Columbia County has 57 active public water systems. Its population served is well below the county average of 705 people per system, and accounts for 0.1% of the 40,191 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 Dikeside Moorage 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 Dikeside Moorage?
EPA lists Dikeside Moorage 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. 43 of the 57 active systems in Columbia County (75%) are also privately owned.
Does Dikeside Moorage have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in November 2012. The violations listed here began between November 2007 and November 2012. By type: 7 contaminant level above the legal limit, 4 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Arsenic (8 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2012-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2010-11-25 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2010-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2010-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2010-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2009-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2009-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2009-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2007-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
The 12 most recent 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.
Dikeside Moorage: frequently asked questions
Who runs Dikeside Moorage?
Dikeside Moorage (PWSID OR4101411) is a community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Dikeside Moorage serve?
Dikeside Moorage reports serving 45 people through 29 service connections in Columbia County, Oregon.
Where does Dikeside Moorage 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 Dikeside Moorage have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in November 2012. 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 Dikeside Moorage'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. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in November 2012. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.
Where can I find Dikeside Moorage's water quality report?
As a community water system, Dikeside Moorage 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 Columbia County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| St Helens, City of | Columbia | 13,410 | Community | Groundwater under influence of surface water |
| Scappoose, City of | Columbia | 8,710 | Community | Surface water |
| Mcnulty Water PUD | Columbia | 2,500 | Community | Groundwater |
| Clatskanie, City of | Columbia | 2,188 | Community | Surface water |
| Vernonia, City of | Columbia | 2,100 | Community | Surface water |
| Warren Water Association | Columbia | 2,050 | 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, “Dikeside Moorage, PWSID OR4101411, Oregon”, https://aquacensus.com/water-systems/oregon/dikeside-moorage-or4101411 (data as of October 1, 2026).