Hawaii National Park, HI Water Safety: 86/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-04
In current HI EPA data, Hawaii National Park's tap water sits in the high-safety tier.
How Hawaii National Park Compares
Data: EPA SDWIS Last verified: 2026-06-04
What You Should Know About Hawaii National Park Water
- Average lead level: 0.009 mg/L.
- CDC health risk index: 12.35 — above typical levels.
Who Supplies Your Water in Hawaii National Park
Hawaii National Park, HI draws its water from one primary utility across 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Hawaii National Park, Hawaii, covering 1 community water system serving approximately 4,201 people.
No EPA violations recorded across any ZIP codes in Hawaii National Park — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Hawaii National Park: A (86/100)
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
Hawaii National Park water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0090 mg/L (EPA action level: 0.015 mg/L)
- 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 |
|---|---|---|---|
| 96718 | A | Hawaii Volcanoes Nat.park | 4,201 |
All ZIP Codes in Hawaii National Park
- 96718 [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.
Health Outcomes in Hawaii National Park
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
Lead Exposure Risk for Children in Hawaii National Park
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.
Lead risk in Hawaii National Park appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Hawaii National Park, HI