Public water system · WA5373380
ActiveRock Island Dam Power House 2
At a glance
Rock Island Dam Power House 2 (PWSID WA5373380) is an active non-transient non-community water system in Chelan County, Washington. It reports serving 88 people through 12 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
88
Service connections
12
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Rock Island Dam Power House 2 compare with other water systems in Chelan County?
By EPA's size categories, Rock Island Dam Power House 2 is a very small system (500 people or fewer). Chelan County has 131 active public water systems. Its population served is well below the county average of 931 people per system, and accounts for less than 0.1% of the 121,966 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Rock Island Dam Power House 2 is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Washington has 400 active non-transient non-community water systems, 8.5% 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 Rock Island Dam Power House 2?
EPA lists Rock Island Dam Power House 2 as owned by a local 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. 22 of the 131 active systems in Chelan County (17%) are also owned by a local government.
Does Rock Island Dam Power House 2 have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2023. The violations listed here began between July 2018 and November 2023. By type: 2 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2023-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 2 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.
Rock Island Dam Power House 2: frequently asked questions
Who runs Rock Island Dam Power House 2?
Rock Island Dam Power House 2 (PWSID WA5373380) is a non-transient non-community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does Rock Island Dam Power House 2 serve?
Rock Island Dam Power House 2 reports serving 88 people through 12 service connections in Chelan County, Washington.
Where does Rock Island Dam Power House 2 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 Rock Island Dam Power House 2 have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2023. 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 Rock Island Dam Power House 2'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 2 violations for this system; none is health-based, and the most recent began in November 2023. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Rock Island Dam Power House 2's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rock Island Dam Power House 2 is a non-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 Chelan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wenatchee City of | Chelan | 43,690 | Community | Groundwater |
| Chelan Co PUD 1 | Chelan | 16,190 | Community | Purchased groundwater |
| Leavenworth City of | Chelan | 11,041 | Community | Surface water |
| Chelan Water Dept City of | Chelan | 9,425 | Community | Surface water |
| Lake Chelan Reclamation District | Chelan | 6,798 | Community | Surface water |
| Cashmere Water Department | Chelan | 5,815 | Community | Surface water |
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, “Rock Island Dam Power House 2, PWSID WA5373380, Washington”, https://aquacensus.com/water-systems/washington/rock-island-dam-power-house-2-wa5373380 (data as of October 1, 2026).