Is Kailua, Hawaii tap water safe?
2 water systems report serving Kailua. Your water depends on which one serves your address. Check your bill if unsure. This list is matched from the ZIP codes in this place, so it may include nearby systems.
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Honolulu Board of Water Supply (Windward–Pearl Harbor)
Serves 631,389 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Latest lead 90th percentile on file is from 2018 (older than 5 years, not graded).
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Marine Corps Base Hawaii
Serves 16,300 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2021).