Backflow Base / Every state / Hawaii
Backflow testing software for Hawaii.
Booking, scheduling, the field test, and the report to the water system, for testing companies in Hawaii.
Hawaii water systems
Hawaii has 117 active community water systems. Each test report goes to the one that serves the address. The largest:
- Hnl-Windward-Pearl Harbor631,389 people served
- Waipahu-Ewa-Waianae217,479 people served
- Wailuku74,511 people served
- Joint Base Pearl Harbor-Hickam65,230 people served
- Mililani50,573 people served
- Hilo39,477 people served
- Schofield Barracks37,920 people served
- Lihue-Kapaa34,854 people served
- Makawao29,868 people served
- North Kona29,581 people served
Water systems: EPA SDWIS, active community systems, 2026-10-19. Population: Census Bureau 2024 estimates.
Testing companies in Hawaii
62 companies on the tester lists of 2 water systems, the most-listed first. The first 25:
- 808 Backflow Testing LLClisted by 2 systems
- Backflow Testing Hawaii LLClisted by 2 systems
- Commercial Plumbinglisted by 2 systems
- Pono Servicelisted by 2 systems
- Pural Water Specialty Company Inc.listed by 2 systems
- 1A1A Backflow Testinglisted by 1 system
- 808 Plumbing Serviceslisted by 1 system
- A-1 Backflow Testing and Repairlisted by 1 system
- A-1 Budget Plumbiunglisted by 1 system
- A.G. Repair LLClisted by 1 system
- Action Plumbinglisted by 1 system
- Aina 1 Plumbinglisted by 1 system
- Alaka’i Mechanical Corp.listed by 1 system
- Aqua Engineerslisted by 1 system
- Barack Plumbinglisted by 1 system
- Big Island Backflow Testing LLClisted by 1 system
- Big Island Mechanical & Construction, LLClisted by 1 system
- Brad's Backflow Testing LLClisted by 1 system
- CJ Plumbinglisted by 1 system
- Continental Mechanicallisted by 1 system
- Cubellis Plumbing LLClisted by 1 system
- Doonwood Engineeringlisted by 1 system
- Dorvin D. Leis Co, Inc.listed by 1 system
- Economy Plumbing & Sheet Metal Inc.listed by 1 system
- Evertrust Plumbing LLClisted by 1 system
From Honolulu Board of Water Supply (serves the Honolulu-Windward-Pearl Harbor and Waipahu-Ewa-Waianae systems) (dated March 14, 2024), County of Hawaii Department of Water Supply (dated April 24, 2026). Checked October 19, 2026. A list shows who may test, not who is good; ask the water system for its current list.
Cities
- Honolulu →345,510 people
Testing in Hawaii
Who may test is set by the state, the water system, or both. Ask the water system you will test for which certifications it accepts before your first test.
The software
- Bookings from a booking page, your own website, and an AI receptionist on your phone.
- Schedule board and route for each tester.
- Field app that scores every test, even with no signal.
- Test reports sent to the water system that serves each address.
- Card payments to your own Stripe account, and yearly renewals that charge after the test.
- Client portal for HOAs, property managers and contractors.
- $50/month flat: no per-test fee, no cut of payments.
- Every feature →What the app does, part by part.
- Compare →Next to other backflow and field-service software.
- Start free →No card. $50/month or $500/year once you go live, 45 days free.
- Free exam prep →Study questions, practice exams, device tests, a VR wet lab.