Public Water Authority
Honolulu Board of Water Supply - Waipahu-Ewa-Waianae Water System
Serving Waipahu, Ewa, Kapolei, Nanakuli, and Waianae areas of west Oahu
Population served
217,479 people (EPA SDWIS active CWS PWS HI0000335)
State system code
FIPS 15
Billing frequency
A dedicated this detail was not publicly posted. The reviewed BWS pages did not state one universal billing frequency for all residential accounts.
Provider briefing
How this utility’s billing works
Honolulu Board of Water Supply - Waipahu-Ewa-Waianae Water System operates as a public water authority serving Waipahu, Ewa, Kapolei, Nanakuli, and Waianae areas of west Oahu. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.
The published water-rate framework is described as Metered municipal water rate schedule with fixed and usage components. The official FY2024-FY2029 schedule includes rates effective July 1, 2026 and service-area classifications; the Waipahu-Ewa-Waianae system is owned by Honolulu BWS and serves west Oahu.. Bills are generated a dedicated this detail was not publicly posted. the reviewed bws pages did not state one universal billing frequency for all residential accounts., and a typical residential cost reference is A dedicated this detail was not publicly posted. The reviewed BWS rate schedule extract did not provide a complete 5,000-7,000-gallon residential total for this system.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.
Wastewater and sewer calculation
BWS supplies drinking water; wastewater sewer charges are administered separately by the City and County of Honolulu Environmental Services. The reviewed BWS sources did not expose a universal sewer calculation for this water system.
Meter and infrastructure notes
A dedicated this detail was not publicly posted. The reviewed BWS results did not identify a universal AMI/AMR technology or reading interval for the Waipahu-Ewa-Waianae system.
Emergency water support
Report a leak or water emergency
A dedicated this detail was not publicly posted. The reviewed BWS results did not expose a verified 24/7 water-emergency number.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Waipahu, Ewa, Kapolei, Nanakuli, and Waianae areas of west Oahu
Honolulu Board of Water Supply - Waipahu-Ewa-Waianae Water System is listed here as a public water authority. The profile separates account actions—such as paying a bill or requesting service—from explanatory material about rates, meters, wastewater, leaks, and delinquency.
Because utility rules can vary by account class, meter size, service address, billing date, and local ordinance, treat the published bill and current provider website as the final authority. Use this profile to locate the correct channel and prepare better questions for customer service.
If your issue is urgent, start with the provider’s emergency number or official payment route rather than waiting for an email response. Keep a written record of calls, confirmation numbers, notice dates, and documents you submit.