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HONOLULU WATER SYSTEM

Serving 1 city in HI

Monitor
2 above health guidelines
631K
People Served
1
City
1
Water Sources
0
MCL Violations

Is HONOLULU WATER SYSTEM Water Safe to Drink?

HONOLULU WATER SYSTEM has reported 2 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.

This utility serves 631,389 people across 1 city in HI. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

HONOLULU WATER SYSTEM Service Area

HONOLULU WATER SYSTEM Contact & Information

Mailing Address

KAWATA, ERWIN Honolulu Board of Water Supply 630 S. Beretania St., Rm. 308 Honolulu, HI 96843

Water Sources

Groundwater

Treatment Methods

Disinfection

Disinfectant Used

Hypochlorite

Recommended Water Filters for HONOLULU WATER SYSTEM

Based on water quality data from cities served by HONOLULU WATER SYSTEM, we recommend NSF-certified filters that can remove contaminants above health guidelines.

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HONOLULU WATER SYSTEM Water Quality Report 2025 | Honolulu, Hawaii | Contact & Safety Data | TapWaterData