Backflow Base / Every state / District of Columbia
Backflow testing software for District of Columbia.
Booking, scheduling, the field test, and the report to the water system, for testing companies in District of Columbia.
District of Columbia water systems
District of Columbia has 4 active community water systems. Each test report goes to the one that serves the address. The largest:
- D.C. Water and Sewer Authority632,323 people served
- Joint Base Anacostia - Bolling20,411 people served
- Naval Station Washington - Wny16,800 people served
- Washington Aqueduct Division.0 people served
Water systems: EPA SDWIS, active community systems, 2026-10-19. Population: Census Bureau 2024 estimates.
Testing companies in District of Columbia
125 companies on the tester lists of 1 water system. The first 25:
- A Tasker Inc, T/A Salco Mechanical Contractors
- A&E Plumbing Inc
- A&H Plumbing Inc
- A1-Flow
- Abduls Plumbing Service LLC
- Acker & Sons, Inc
- ADJ Sheetmetal Inc
- AH Jordan Plumbing & Mechanical
- Al Gleeson Electrical Co. Inc.
- All Mechanical and Plumbing LLC
- All Season Plumbing, Heating, and A/C, Inc.
- American Boiler, Inc.
- American Combustion Industries Inc
- Anytime Plumbing
- Apex Plumbing
- Ascendant Program Services, LLC
- Aspen Hill Plumbing LLC
- Backflow Services VA, LLC
- Backflow Technology, LLC
- Benjamin F. Gartrell Plumbing & Heating Inc
- Better Flow Backflow, LLC
- Bionic Plumbing and Heating
- Breeden Mechanical Design
- C.L. Hibbard Plumbing, Htg, A/C, Inc
- Capitol Boiler Works
From DC Water. Checked October 19, 2026. A list shows who may test, not who is good; ask the water system for its current list.
Cities
- Washington →702,250 people
Testing in District of Columbia
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.