Public water system · HI0000360
ActiveJoint Base Pearl Harbor-Hickam
At a glance
Joint Base Pearl Harbor-Hickam (PWSID HI0000360) is an active community water system in Honolulu County, Hawaii. It reports serving 65,230 people through 7,619 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in November 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
65,230
Service connections
7,619
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Joint Base Pearl Harbor-Hickam compare with other water systems in Honolulu County?
By EPA's size categories, Joint Base Pearl Harbor-Hickam is a large system (10,001 to 100,000 people). Honolulu County has 38 active public water systems, and Joint Base Pearl Harbor-Hickam is the 3rd-largest of them by population served. Its population served is about twice the county average of 29,687 people per system, and accounts for 5.8% 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 Joint Base Pearl Harbor-Hickam is about 9.7 times 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 Joint Base Pearl Harbor-Hickam?
EPA lists Joint Base Pearl Harbor-Hickam as owned by the federal government. 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. 11 of the 38 active systems in Honolulu County (29%) are also owned by the federal government.
Does Joint Base Pearl Harbor-Hickam have drinking water violations?
EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in November 2021. The violations listed here began between June 1991 and November 2021. By type: 7 monitoring and reporting, 2 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 6 as archived, 3 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2021-11-29 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Unaddressed |
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2015-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-02-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-01-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-08-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-07-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-06-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 10 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.
Joint Base Pearl Harbor-Hickam: frequently asked questions
Who runs Joint Base Pearl Harbor-Hickam?
Joint Base Pearl Harbor-Hickam (PWSID HI0000360) is a community water system owned by the federal government. It is regulated by the HI state drinking water program.
How many people does Joint Base Pearl Harbor-Hickam serve?
Joint Base Pearl Harbor-Hickam reports serving 65,230 people through 7,619 service connections in Honolulu County, Hawaii.
Where does Joint Base Pearl Harbor-Hickam 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 Joint Base Pearl Harbor-Hickam have any drinking water violations?
EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in November 2021. 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 Joint Base Pearl Harbor-Hickam'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 10 violations for this system; 2 are health-based, and the most recent began in November 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the HI state drinking water program.
Where can I find Joint Base Pearl Harbor-Hickam's water quality report?
As a community water system, Joint Base Pearl Harbor-Hickam 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 |
| Mililani | Honolulu | 50,573 | Community | Groundwater |
| Schofield Barracks | Honolulu | 37,920 | Community | Groundwater |
| Wahiawa | Honolulu | 23,348 | Community | Groundwater |
| Marine Corps Base Hawaii | Honolulu | 16,300 | Community | Purchased 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, “Joint Base Pearl Harbor-Hickam, PWSID HI0000360, Hawaii”, https://aquacensus.com/water-systems/hawaii/joint-base-pearl-harbor-hickam-hi0000360 (data as of October 1, 2026).