Public water system · WA5319881
ActivePomeroy Plowman Ranch Ltd
At a glance
Pomeroy Plowman Ranch Ltd (PWSID WA5319881) is an active transient non-community water system in Clark County, Washington. It reports serving 33 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in October 2004.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
33
Service connections
4
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Pomeroy Plowman Ranch Ltd compare with other water systems in Clark County?
By EPA's size categories, Pomeroy Plowman Ranch Ltd is a very small system (500 people or fewer). Clark County has 72 active public water systems. Its population served is well below the county average of 9,076 people per system, and accounts for less than 0.1% of the 653,450 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 Pomeroy Plowman Ranch Ltd is well 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 Pomeroy Plowman Ranch Ltd?
EPA lists Pomeroy Plowman Ranch Ltd 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. 48 of the 72 active systems in Clark County (67%) are also privately owned.
Does Pomeroy Plowman Ranch Ltd have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in October 2004. The violations listed here began between October 1994 and October 2004. By type: 2 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 as archived. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2004-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1999-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1995-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1994-10-19 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 4 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.
Pomeroy Plowman Ranch Ltd: frequently asked questions
Who runs Pomeroy Plowman Ranch Ltd?
Pomeroy Plowman Ranch Ltd (PWSID WA5319881) is a transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Pomeroy Plowman Ranch Ltd serve?
Pomeroy Plowman Ranch Ltd reports serving 33 people through 4 service connections in Clark County, Washington.
Where does Pomeroy Plowman Ranch Ltd 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 Pomeroy Plowman Ranch Ltd have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in October 2004. 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 Pomeroy Plowman Ranch Ltd'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 4 violations for this system; 2 are health-based, and the most recent began in October 2004. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Pomeroy Plowman Ranch Ltd's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Pomeroy Plowman Ranch Ltd 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 Clark County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Vancouver City of | Clark | 373,047 | Community | Groundwater |
| Clark Public Utilities | Clark | 153,526 | Community | Groundwater |
| Camas Municipal Water Sewer System | Clark | 31,794 | Community | Groundwater |
| Battle Ground Water Dept City of | Clark | 30,237 | Community | Groundwater |
| Washougal City of | Clark | 21,441 | Community | Groundwater |
| Ridgefield Public Works | Clark | 21,225 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Pomeroy Plowman Ranch Ltd, PWSID WA5319881, Washington”, https://aquacensus.com/water-systems/washington/pomeroy-plowman-ranch-ltd-wa5319881 (data as of October 1, 2026).