Public water system · WA5300429
ActiveGreen Island Hills Water Assn
At a glance
Green Island Hills Water Assn (PWSID WA5300429) is an active community water system in Island County, Washington. It reports serving 265 people through 77 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, none is health-based, and the most recent began in July 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
265
Service connections
77
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Green Island Hills Water Assn compare with other water systems in Island County?
By EPA's size categories, Green Island Hills Water Assn is a very small system (500 people or fewer). Island County has 307 active public water systems. Its population served is about 21% below the county average of 335 people per system, and accounts for 0.3% of the 102,977 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 Green Island Hills Water Assn 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 Green Island Hills Water Assn?
EPA lists Green Island Hills Water Assn 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. 274 of the 307 active systems in Island County (89%) are also privately owned.
Does Green Island Hills Water Assn have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2017. The violations listed here began between April 2007 and July 2017. By type: 10 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Consumer Confidence Rule (2 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 |
|---|---|---|---|---|
| 2017-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2013-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | 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.
Green Island Hills Water Assn: frequently asked questions
Who runs Green Island Hills Water Assn?
Green Island Hills Water Assn (PWSID WA5300429) is a community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Green Island Hills Water Assn serve?
Green Island Hills Water Assn reports serving 265 people through 77 service connections in Island County, Washington.
Where does Green Island Hills Water Assn 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 Green Island Hills Water Assn have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2017. 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 Green Island Hills Water Assn'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, none is health-based, and the most recent began in July 2017. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find Green Island Hills Water Assn's water quality report?
As a community water system, Green Island Hills Water Assn 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 Island County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Oak Harbor City of | Island | 23,675 | Community | Purchased surface water |
| Naval Air Station/Whidbey Island | Island | 16,595 | Community | Purchased surface water |
| Coupeville Town of | Island | 4,142 | Community | Groundwater |
| Camano Water Association | Island | 2,592 | Community | Groundwater |
| Clinton Water District | Island | 1,980 | Community | Groundwater |
| Camano Island State Park | Island | 1,718 | Transient non-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, “Green Island Hills Water Assn, PWSID WA5300429, Washington”, https://aquacensus.com/water-systems/washington/green-island-hills-water-assn-wa5300429 (data as of October 1, 2026).