Public water system · HI0000146
ActiveHawaii Volcanoes Nat.Park
At a glance
Hawaii Volcanoes Nat.Park (PWSID HI0000146) is an active community water system in Hawaii County, Hawaii. It reports serving 4,201 people through 55 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,201
Service connections
55
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hawaii Volcanoes Nat.Park compare with other water systems in Hawaii County?
By EPA's size categories, Hawaii Volcanoes Nat.Park is a medium system (3,301 to 10,000 people). Hawaii County has 39 active public water systems. Its population served is about 14% above the county average of 3,693 people per system, and accounts for 2.9% 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 Hawaii Volcanoes Nat.Park is about 37% 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 Hawaii Volcanoes Nat.Park?
EPA lists Hawaii Volcanoes Nat.Park 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. 2 of the 39 active systems in Hawaii County (5.1%) are also owned by the federal government.
Does Hawaii Volcanoes Nat.Park have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2005. The violations listed here began between July 1992 and May 2005. By type: 2 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 3 as archived. 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 |
|---|---|---|---|---|
| 2005-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Archived |
| 1992-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Archived |
All 3 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.
Hawaii Volcanoes Nat.Park: frequently asked questions
Who runs Hawaii Volcanoes Nat.Park?
Hawaii Volcanoes Nat.Park (PWSID HI0000146) is a community water system owned by the federal government. It is regulated by the HI state drinking water program.
How many people does Hawaii Volcanoes Nat.Park serve?
Hawaii Volcanoes Nat.Park reports serving 4,201 people through 55 service connections in Hawaii County, Hawaii.
Where does Hawaii Volcanoes Nat.Park 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 Hawaii Volcanoes Nat.Park have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2005. 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 Hawaii Volcanoes Nat.Park'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 3 violations for this system; 1 is health-based, and the most recent began in May 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the HI state drinking water program.
Where can I find Hawaii Volcanoes Nat.Park's water quality report?
As a community water system, Hawaii Volcanoes Nat.Park 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, “Hawaii Volcanoes Nat.Park, PWSID HI0000146, Hawaii”, https://aquacensus.com/water-systems/hawaii/hawaii-volcanoes-nat-park-hi0000146 (data as of October 1, 2026).