Public water system · HI0000402
ActiveAnini
At a glance
Anini (PWSID HI0000402) is an active community water system in Kauai County, Hawaii. It reports serving 174 people through 69 service connections. Its primary water source is purchased 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
174
Service connections
69
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Anini compare with other water systems in Kauai County?
By EPA's size categories, Anini 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 0.2% 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 community water system reports serving 6,703 people, so Anini 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 14 Hawaii systems (10%) list purchased groundwater as their primary source.
Who owns and regulates Anini?
EPA lists Anini 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. 9 of the 19 active systems in Kauai County (47%) are also owned by a local government.
Does Anini 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 Anini. For the latest compliance status, check EPA ECHO for current compliance history.
Anini: frequently asked questions
Who runs Anini?
Anini (PWSID HI0000402) is a community water system owned by a local government. It is regulated by the HI state drinking water program.
How many people does Anini serve?
Anini reports serving 174 people through 69 service connections in Kauai County, Hawaii.
Where does Anini get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Anini have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Anini'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 Anini's water quality report?
As a community water system, Anini 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 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, “Anini, PWSID HI0000402, Hawaii”, https://aquacensus.com/water-systems/hawaii/anini-hi0000402 (data as of October 1, 2026).