Public water system · HI0000165
ActiveKona Water Service Company
At a glance
Kona Water Service Company (PWSID HI0000165) is an active community water system in Hawaii County, Hawaii. It reports serving 260 people through 243 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
260
Service connections
243
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Kona Water Service Company compare with other water systems in Hawaii County?
By EPA's size categories, Kona Water Service Company is a very small system (500 people or fewer). Hawaii County has 39 active public water systems. Its population served is well below the county average of 3,693 people per system, and accounts for 0.2% of the 144,021 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 Kona Water Service Company 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. 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 Kona Water Service Company?
EPA lists Kona Water Service Company 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. 13 of the 39 active systems in Hawaii County (33%) are also privately owned.
Does Kona Water Service Company 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 Kona Water Service Company. For the latest compliance status, check EPA ECHO for current compliance history.
Kona Water Service Company: frequently asked questions
Who runs Kona Water Service Company?
Kona Water Service Company (PWSID HI0000165) is a community water system privately owned. It is regulated by the HI state drinking water program.
How many people does Kona Water Service Company serve?
Kona Water Service Company reports serving 260 people through 243 service connections in Hawaii County, Hawaii.
Where does Kona Water Service Company 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 Kona Water Service Company have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Kona Water Service Company'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 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 Kona Water Service Company's water quality report?
As a community water system, Kona Water Service Company 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 Hawaii County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hilo | Hawaii | 39,477 | Community | Groundwater |
| North Kona | Hawaii | 29,581 | Community | Groundwater |
| Waikoloa | Hawaii | 12,100 | Community | Groundwater |
| South Kohala | Hawaii | 9,612 | Community | Surface water |
| South Kona | Hawaii | 6,512 | Community | Groundwater |
| Olaa-Mountain View | Hawaii | 6,467 | 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, “Kona Water Service Company, PWSID HI0000165, Hawaii”, https://aquacensus.com/water-systems/hawaii/kona-water-service-company-hi0000165 (data as of October 1, 2026).