Public water system · HI0000334
ActiveWaipio Heights
At a glance
Waipio Heights (PWSID HI0000334) is an active community water system in Honolulu County, Hawaii. It reports serving 11,516 people through 2,255 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
11,516
Service connections
2,255
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Waipio Heights compare with other water systems in Honolulu County?
By EPA's size categories, Waipio Heights is a large system (10,001 to 100,000 people). Honolulu County has 38 active public water systems. Its population served is about 61% below the county average of 29,687 people per system, and accounts for 1% 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 Waipio Heights is about 72% above 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 Waipio Heights?
EPA lists Waipio Heights as owned by a local 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. 8 of the 38 active systems in Honolulu County (21%) are also owned by a local government.
Does Waipio Heights have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Waipio Heights. For the latest compliance status, check EPA ECHO for current compliance history.
Waipio Heights: frequently asked questions
Who runs Waipio Heights?
Waipio Heights (PWSID HI0000334) is a community water system owned by a local government. It is regulated by the HI state drinking water program.
How many people does Waipio Heights serve?
Waipio Heights reports serving 11,516 people through 2,255 service connections in Honolulu County, Hawaii.
Where does Waipio Heights 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 Waipio Heights have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Waipio Heights' 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 Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the HI state drinking water program.
Where can I find Waipio Heights' water quality report?
As a community water system, Waipio Heights 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 |
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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, “Waipio Heights, PWSID HI0000334, Hawaii”, https://aquacensus.com/water-systems/hawaii/waipio-heights-hi0000334 (data as of October 1, 2026).