Public water system · HI0000426
ActivePolihale State Park
At a glance
Polihale State Park (PWSID HI0000426) is an active transient non-community water system in Kauai County, Hawaii. It reports serving 300 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
300
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Polihale State Park compare with other water systems in Kauai County?
By EPA's size categories, Polihale State Park is a very small system (500 people or fewer). Kauai County has 19 active public water systems. Its population served is well below the county average of 4,167 people per system, and accounts for 0.4% of the 79,166 people reported by systems filed under the county. Across Hawaii, the 136 active systems average 11,181 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Polihale State Park is about twice that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Hawaii has 3 active transient non-community water systems, 2.2% 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 Polihale State Park?
EPA lists Polihale State Park as owned by a state 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. 3 of the 19 active systems in Kauai County (16%) are also owned by a state government.
Does Polihale State Park 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 Polihale State Park. For the latest compliance status, check EPA ECHO for current compliance history.
Polihale State Park: frequently asked questions
Who runs Polihale State Park?
Polihale State Park (PWSID HI0000426) is a transient non-community water system owned by a state government. It is regulated by the HI state drinking water program.
How many people does Polihale State Park serve?
Polihale State Park reports serving 300 people through 1 service connection in Kauai County, Hawaii.
Where does Polihale State 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 Polihale State Park have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Polihale State 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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the HI state drinking water program.
Where can I find Polihale State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Polihale State Park is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Kauai County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lihue-Kapaa | Kauai | 34,854 | Community | Surface water |
| Kalaheo-Koloa | Kauai | 12,660 | Community | Groundwater |
| Princeville | Kauai | 6,911 | Community | Groundwater |
| Kekaha-Waimea | Kauai | 5,998 | Community | Groundwater |
| Hanapepe-Eleele | Kauai | 5,592 | Community | Groundwater |
| Kilauea | Kauai | 3,420 | 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, “Polihale State Park, PWSID HI0000426, Hawaii”, https://aquacensus.com/water-systems/hawaii/polihale-state-park-hi0000426 (data as of October 1, 2026).