Public water system · WA5354680
ActiveMill A Water Co
At a glance
Mill A Water Co (PWSID WA5354680) is an active community water system in Skamania County, Washington. It reports serving 278 people through 80 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, one is health-based, and the most recent began in January 2007.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
278
Service connections
80
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mill A Water Co compare with other water systems in Skamania County?
By EPA's size categories, Mill A Water Co is a very small system (500 people or fewer). Skamania County has 56 active public water systems. Its population served is about 17% below the county average of 335 people per system, and accounts for 1.5% of the 18,736 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active community water system reports serving 6,703 people, so Mill A Water Co 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. Washington has 2,392 active community water systems, 51% 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 Mill A Water Co?
EPA lists Mill A Water Co 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. 24 of the 56 active systems in Skamania County (43%) are also privately owned.
Does Mill A Water Co have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2007. The violations listed here began between October 1979 and January 2007. By type: 10 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) (3 of them). EPA lists 9 as archived and 3 as resolved. 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. 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 |
|---|---|---|---|---|
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1999-10-19 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1997-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1996-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Archived |
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.
Mill A Water Co: frequently asked questions
Who runs Mill A Water Co?
Mill A Water Co (PWSID WA5354680) is a community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Mill A Water Co serve?
Mill A Water Co reports serving 278 people through 80 service connections in Skamania County, Washington.
Where does Mill A Water Co 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 Mill A Water Co have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2007. 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 Mill A Water Co'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, one is health-based, and the most recent began in January 2007. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find Mill A Water Co's water quality report?
As a community water system, Mill A Water Co 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 Skamania County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Stevenson Water Dept | Skamania | 4,702 | Community | Surface water |
| Carson | Skamania | 3,015 | Community | Surface water |
| Johnston Ridge Observatory | Skamania | 2,506 | Transient non-community | Groundwater |
| Beacon Rock State Park 1 | Skamania | 1,375 | Transient non-community | Groundwater |
| North Bonneville City of | Skamania | 1,048 | Community | Groundwater |
| Underwood | Skamania | 1,000 | 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, “Mill A Water Co, PWSID WA5354680, Washington”, https://aquacensus.com/water-systems/washington/mill-a-water-co-wa5354680 (data as of October 1, 2026).