Kawaihae Unit #1
EPA ID: HI0000164 · 193 people served · 1 ZIP code
Water monitoring history at Kawaihae Unit #1 shows a clean slate — EPA tracking over the past five years turned up no violations, and 193 residents continue to receive fully compliant service.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Kawaihae Unit #1 Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Kawaihae Unit #1 serves a community with a median household income of $98,177 and an estimated 13,326 residents across its service area.
Environmental Justice Note: 33% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Kawaihae Unit #1's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 5% of homes in Hawaii County, Hawaii rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Hawaii
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Kawaihae Unit #1 (EPA ID: HI0000164) is a community water system in Hawaii that serves approximately 193 people from groundwater sources.
This system serves ZIP code 96743 in Kamuela.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
- 96743 — Kamuela
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Kawaihae Unit #1 (HI0000164) on EPA.gov.
Frequently Asked Questions
Is Kawaihae Unit #1 water safe to drink?
Based on EPA records, Kawaihae Unit #1 has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Kawaihae Unit #1 serve?
Kawaihae Unit #1 serves approximately 193 people across 1 ZIP code in Hawaii.
Where does Kawaihae Unit #1 get its water?
The primary water source is groundwater.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.