Kalaheo, HI Water Safety: 87/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
For households in Kalaheo, HI water data shows a consistently above-average safety picture.
How Kalaheo Compares
Data: EPA SDWIS Last verified: 2026-06-03
Kalaheo Water: The Quick Version
- Homes built before 1986: 59% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 11.45.
Water Systems Serving Kalaheo
Residential water service in Kalaheo, HI is divided among 3 separate utilities, drawn from 3 systems on file with federal regulators.
Overview
We track water quality and home safety data for 1 ZIP code in Kalaheo, Hawaii (population ~6,283), covering 3 community water systems serving approximately 18,512 people region-wide.
No EPA violations recorded across any ZIP codes in Kalaheo — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Kalaheo: A (87/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Kalaheo water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Kalaheo
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 96741 | A | Kalaheo-koloa | 12,660 |
All ZIP Codes in Kalaheo
- 96741 [A]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Kalaheo
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
How Old Is Kalaheo's Housing Stock?
With 59% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
The lead that enters tap water in older homes often comes not from the municipal supply but from the home's own plumbing — from solder used in copper joints before the 1986 federal ban, or from lead pipes installed before 1970. In Kalaheo, where the median build year is 1988, these older materials are widespread. More than half the residential stock predates the 1986 solder ban, and a significant fraction predates 1970 as well. For residents in those homes, the city-wide water quality picture is a less relevant frame than the specific materials inside their own walls and under their own street.
Over half of homes in Kalaheo were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Kalaheo: Remediation Cost in Perspective
Within the Kalaheo market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Kalaheo are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 26% above the Hawaii average.
Protecting Children from Lead in Kalaheo
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Households with kids in the home — for whom CDC guidance places particular weight on minimizing exposure — face a specific local picture in Kalaheo. 59% of homes here come from the pre-rule era, and aggregate utility samples either approach or cross 0.015 mg/L. A baseline draw-test kit and certified lead-removal filtration are available via retailer networks for households confirming conditions at a specific tap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Kalaheo
Although Kalaheo's flood history doesn't reach high-severity thresholds, NFIP data documents 10 claims and FEMA maps place 100% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Kalaheo has a moderate flood history with 10 FEMA claims averaging $14,591 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,200</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Kalaheo, HI