Utility contacts to verify before work
Investor-owned utility
Hawaiian Electric
- Service area
- Investor-owned electric utility serving Oahu, Maui County, and Hawaii Island through Hawaiian Electric operating companies.
- Contractor / service coordination
- https://www.hawaiianelectric.com/
- 811 / call before you dig
- https://digsafelyhawaii.com/
Electric co-op
Kauai Island Utility Cooperative
- Service area
- Member-owned electric cooperative serving Kauai with island-wide electric distribution and renewable generation programs.
- Contractor / service coordination
- https://www.kiuc.coop/
- 811 / call before you dig
- https://digsafelyhawaii.com/
Gas utility
Hawaii Gas
- Service area
- Gas utility serving customers across the Hawaiian Islands with synthetic natural gas, propane, and related energy services.
- Contractor / service coordination
- https://www.hawaiigas.com/
- 811 / call before you dig
- https://digsafelyhawaii.com/
Water utility
Honolulu Board of Water Supply
- Service area
- Public water utility serving Honolulu and Oahu communities with municipal water supply, meters, and water-service coordination.
- Contractor / service coordination
- https://www.boardofwatersupply.com/
- 811 / call before you dig
- https://digsafelyhawaii.com/
Water utility
Maui Department of Water Supply
- Service area
- County water department serving Maui County water systems and coordinating meters, service laterals, and customer water accounts.
- Contractor / service coordination
- https://www.mauicounty.gov/126/Department-of-Water-Supply
- 811 / call before you dig
- https://digsafelyhawaii.com/
When to call which utility
Use this Hawaii utility map before a job changes a meter, service mast, service drop, gas appliance, water line, trench, driveway, sewer lateral, or exterior structure. For electric outages, meter pulls, temporary power, service upgrades, underground-to-overhead changes, or a panel job that requires a utility disconnect, start with the electric utility assigned to the address: Hawaiian Electric and Kauai Island Utility Cooperative. Rural addresses often sit in cooperative territory even when the nearest city is served by an investor-owned or municipal utility, so verify the premise before an electrician schedules the cutover. For natural-gas odors, hit lines, meter relocations, pressure questions, or appliance conversions, stop work and call the gas utility or 911 from a safe distance when there is an immediate leak; use Hawaii Gas for the listed gas distribution territory. Water utilities such as Honolulu Board of Water Supply coordinate taps, meters, backflow requirements, main shutoffs, hydrant use, and service-line ownership questions. Municipal utilities may bundle electric, gas, water, wastewater, and stormwater, so one counter can control several approvals. Before any excavation, boring, fence post, sign, tree planting, drainage, sewer, or water-service work, file the 811 ticket through https://digsafelyhawaii.com/ and wait for marks or positive response. The utility marks public facilities; the contractor still needs private locating for owner-installed lighting, irrigation, propane, septic, yard drains, and lines beyond the meter.
811 comes before utility-side work
File a locate request before trenching, boring, planting, fencing, drainage work, sewer work, or water-service changes. Utility marks do not replace private locating on owner-installed lines.
Source: ProFix Editorial Team. Last updated 2026-06-09. Utility territories can change at parcel boundaries; verify the premise address with the utility and local 811 system before scheduling work.