Public water system · WA53AB169
ActivePlymouth Day Use
At a glance
Plymouth Day Use (PWSID WA53AB169) is an active transient non-community water system in Benton County, Oregon. It reports serving 242 people through 8 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in May 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
242
Service connections
8
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Plymouth Day Use compare with other water systems in Benton County?
By EPA's size categories, Plymouth Day Use is a very small system (500 people or fewer). Benton County has 51 active public water systems. Its population served is well below the county average of 1,430 people per system, and accounts for 0.3% of the 72,904 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Plymouth Day Use is about 68% above 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. Oregon has 1,250 active transient non-community water systems, 49% 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 Plymouth Day Use?
EPA lists Plymouth Day Use as owned by the federal government. 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. 3 of the 51 active systems in Benton County (5.9%) are also owned by the federal government.
Does Plymouth Day Use have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in May 2021. The violations listed here began between September 2015 and May 2021. By type: 2 monitoring and reporting and 1 monitoring. The contaminants or rules involved are Revised Total Coliform Rule, Nitrate and Total coliform bacteria (TCR). EPA lists 3 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 |
|---|---|---|---|---|
| 2021-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2015-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Plymouth Day Use: frequently asked questions
Who runs Plymouth Day Use?
Plymouth Day Use (PWSID WA53AB169) is a transient non-community water system owned by the federal government. It is regulated by the WA state drinking water program.
How many people does Plymouth Day Use serve?
Plymouth Day Use reports serving 242 people through 8 service connections in Benton County, Oregon.
Where does Plymouth Day Use 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 Plymouth Day Use have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in May 2021. 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 Plymouth Day Use'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 3 violations for this system; none is health-based, and the most recent began in May 2021. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Plymouth Day Use's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Plymouth Day Use 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 Benton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Corvallis, City of | Benton | 61,468 | Community | Surface water |
| Philomath Public Works | Benton | 4,670 | Community | Surface water |
| Adair Village Water System | Benton | 875 | Community | Surface water |
| Monroe, City of | Benton | 723 | Community | Surface water |
| Knoll Terrace Park | Benton | 452 | Community | Groundwater |
| Vineyard Mountain Water | Benton | 325 | 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, “Plymouth Day Use, PWSID WA53AB169, Oregon”, https://aquacensus.com/water-systems/oregon/plymouth-day-use-wa53ab169 (data as of October 1, 2026).