Public water system · HI0000312
ActiveThe Queen'S Medical Center
At a glance
The Queen'S Medical Center (PWSID HI0000312) is an active community water system in Honolulu County, Hawaii. It reports serving 3,440 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in September 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,440
Service connections
1
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does The Queen'S Medical Center compare with other water systems in Honolulu County?
By EPA's size categories, The Queen'S Medical Center is a medium system (3,301 to 10,000 people). Honolulu County has 38 active public water systems. Its population served is well below the county average of 29,687 people per system, and accounts for 0.3% of the 1,128,119 people reported by systems filed under the county. Across Hawaii, the 136 active systems average 11,181 people each. Nationally, the average active community water system reports serving 6,703 people, so The Queen'S Medical Center is about half of 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. Hawaii has 119 active community water systems, 88% of the state's 136 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 112 Hawaii systems (82%) list groundwater as their primary source.
Who owns and regulates The Queen'S Medical Center?
EPA lists The Queen'S Medical Center as privately owned. The HI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 16 of the 38 active systems in Honolulu County (42%) are also privately owned.
Does The Queen'S Medical Center have drinking water violations?
EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in September 2015. The violations listed here began between February 1995 and September 2015. By type: 6 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 7 as resolved and 2 as archived. 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. 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 |
|---|---|---|---|---|
| 2015-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,3,7,8-TCDD (dioxin)code 2063 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | No | Resolved |
| 1995-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1995-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 9 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.
The Queen'S Medical Center: frequently asked questions
Who runs The Queen'S Medical Center?
The Queen'S Medical Center (PWSID HI0000312) is a community water system privately owned. It is regulated by the HI state drinking water program.
How many people does The Queen'S Medical Center serve?
The Queen'S Medical Center reports serving 3,440 people through 1 service connection in Honolulu County, Hawaii.
Where does The Queen'S Medical Center 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 The Queen'S Medical Center have any drinking water violations?
EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in September 2015. 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 The Queen'S Medical Center'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 9 violations for this system; 3 are health-based, and the most recent began in September 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the HI state drinking water program.
Where can I find The Queen'S Medical Center's water quality report?
As a community water system, The Queen'S Medical Center 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 Honolulu County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hnl-Windward-Pearl Harbor | Honolulu | 631,389 | Community | Groundwater |
| Waipahu-Ewa-Waianae | Honolulu | 217,479 | Community | Groundwater |
| Joint Base Pearl Harbor-Hickam | Honolulu | 65,230 | Community | Groundwater |
| Mililani | Honolulu | 50,573 | Community | Groundwater |
| Schofield Barracks | Honolulu | 37,920 | Community | Groundwater |
| Wahiawa | Honolulu | 23,348 | 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, “The Queen'S Medical Center, PWSID HI0000312, Hawaii”, https://aquacensus.com/water-systems/hawaii/the-queen-s-medical-center-hi0000312 (data as of October 1, 2026).