Public water system · HI0000112
ActiveOlaa-Mountain View
At a glance
Olaa-Mountain View (PWSID HI0000112) is an active community water system in Hawaii County, Hawaii. It reports serving 6,467 people through 2,395 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
6,467
Service connections
2,395
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Olaa-Mountain View compare with other water systems in Hawaii County?
By EPA's size categories, Olaa-Mountain View is a medium system (3,301 to 10,000 people). Hawaii County has 39 active public water systems, and Olaa-Mountain View is the 6th-largest of them by population served. Its population served is about 75% above the county average of 3,693 people per system, and accounts for 4.5% 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 Olaa-Mountain View is roughly in line with 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 Olaa-Mountain View?
EPA lists Olaa-Mountain View 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. 23 of the 39 active systems in Hawaii County (59%) are also owned by a local government.
Does Olaa-Mountain View 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 Olaa-Mountain View. For the latest compliance status, check EPA ECHO for current compliance history.
Olaa-Mountain View: frequently asked questions
Who runs Olaa-Mountain View?
Olaa-Mountain View (PWSID HI0000112) is a community water system owned by a local government. It is regulated by the HI state drinking water program.
How many people does Olaa-Mountain View serve?
Olaa-Mountain View reports serving 6,467 people through 2,395 service connections in Hawaii County, Hawaii.
Where does Olaa-Mountain View 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 Olaa-Mountain View have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Olaa-Mountain View'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 Olaa-Mountain View's water quality report?
As a community water system, Olaa-Mountain View 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 |
| North Kohala | Hawaii | 4,933 | 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, “Olaa-Mountain View, PWSID HI0000112, Hawaii”, https://aquacensus.com/water-systems/hawaii/olaa-mountain-view-hi0000112 (data as of October 1, 2026).