Honolulu Board of Water Supply - HNL Windward/Pearl Harbor
Windward Oahu and Pearl Harbor service areas
Population reference
631,389 people (EPA SDWIS active CWS PWS HI0000331)
Billing detail
Partial public detail found
Official destination
Open provider website ↗Provider-specific findings
Billing and account research from public material
Provider-specific research notes are displayed separately from fields that contain only an unavailable-information marker. Read qualifiers in each note and verify current account terms with the provider.
- Billing frequency
- Monthly or account-scheduled according to meter route; the BWS statement controls the individual billing period.
- Rate structure
- Metered residential water rates under the Board's FY2024-FY2029 schedule, with fixed service charges and increasing usage tiers designed to promote conservation.
- Wastewater and sewer calculation
- BWS bills potable water; Honolulu wastewater charges are administered separately by the City Department of Environmental Services. Sewer charges use the City's residential wastewater schedule and may differ from the BWS water bill; the reviewed pages did not expose a universal winter-average calculation for this CWS.
- Meter reading
- BWS uses route-based customer water meters and provides account usage information through its online account/app; the reviewed pages did not identify one universal AMI/AMR vendor or interval for every route.
Context, not a score
How documentation coverage compares
This profile
57%
overview fields with research notes
Hawaii
36%
records with any overview detail
National index
50%
records with any overview detail
Coverage measures what this directory documented. It does not measure service quality, affordability, or regulatory compliance.
Research record
Partial public detail found
4 of 7 fields in this section contain provider-specific public detail in dataset August 1, 2026.
Documented
57%
Details not confirmed in the reviewed public material
- Residential cost reference
- New-account deposit
- Activation or transfer fee
“Not confirmed” means the directory did not identify a dependable public statement. It does not mean the provider has no policy or option.
Primary verification routes
- Honolulu Board of Water Supply - HNL Windward/Pearl Harbor public website ↗
Provider-controlled destination used to confirm current customer instructions.
- EPA SDWIS / ECHO lookup (HI0000331) ↗
Search the federal drinking-water database using public water system ID HI0000331.