For certified testers, plumbers, irrigation & fire-protection contractors
Backflow test reports in under 60 seconds.
Enter the site, punch in the gauge readings, sign on the screen. BackflowPass grades every differential as you type and hands you a one-page PDF test report — in a basement, in a vault, with no signal and no account.
- Works with no signal
- Live pass/fail math
- One-page PDF report
Step 3 · Readings · RP / RPZ
OfflineCheck valve #1
Minimum 5.0 PSID
Relief valve opening
Minimum 2.0 PSID
Buffer (calculated)
OK4.8PSID
Check #1 − relief opening · minimum 3.0 PSID
Check valve #2
Shutoffs #1 / #2
Passed compliance
5 of 5 required readings within limits
One-page PDF test report
8.5 × 11 portrait · facility, assembly, readings, repairs, signatures
Three steps in the field
Site, readings, signature. That's the whole job.
No wizard sprawl and no re-typing what the gauge already told you. Every screen is built for one thumb, gloves and bad lighting.
- 1
Enter the site and the assembly
Facility, address, purveyor and meter number, then the assembly type, make, model, serial, size and line pressure. Saved customers and assemblies fill it in for annual retests.
- 2
Punch in the gauge readings
Only the fields that apply to that assembly appear. Large decimal inputs with ±0.1 steppers, a pass/fail badge beside every reading, and repairs plus a final retest appear the moment something fails.
- 3
Sign and export the report
Tester and site-representative signatures on the screen, then a one-page PDF you can download, email or share before you leave the vault.
Supported assemblies
Six assembly types, each with its own reading sheet
Pick the type and the form reshapes itself. Detector assemblies inherit their parent rule family and add the bypass fields fire-protection work needs.
- RP / RPZASSE 1013 assembly standard
Reduced pressure principle
Check #1, relief valve opening, calculated buffer, check #2 tightness, both shutoffs
- DC / DCVAASSE 1015 assembly standard
Double check valve assembly
Check #1, check #2, both shutoffs
- PVBASSE 1020 assembly standard
Pressure vacuum breaker
Air inlet opening point, check valve holding
- SVBASSE 1056 assembly standard
Spill-resistant vacuum breaker
Air inlet opening point, check valve holding
- DCDAFire line · DC rule family
Double check detector assembly
Main assembly checks plus bypass meter and bypass assembly fields
- RPDAFire line · RP rule family
Reduced pressure detector assembly
Main assembly checks and buffer plus bypass meter fields
Thresholds ship with a common national baseline and are held in one rule set, so a jurisdiction with different limits can be configured rather than worked around.
Real-time results
The verdict lands while the gauge is still hooked up
Every differential is graded as you type, the RP buffer is calculated for you, and the overall result is derived — never something you can tick by hand.
Baseline pass criteria
- RP / RPZ check #1≥ 5.0 PSID
- RP relief valve opening≥ 2.0 PSID
- RP buffer (check #1 − relief)≥ 3.0 PSID
- DC check #1 and #2≥ 1.0 PSID each
- PVB / SVB air inlet≥ 1.0 PSID
- PVB / SVB check holding≥ 1.0 PSID
Shutoff valves must hold tight to certify. Missing readings read INCOMPLETE, never FAIL.
Buffer math you can defend
Check #1 minus relief opening is shown in large type with an OK / Risk indicator, so a marginal RP gets caught on site instead of at the office.
Failure reasons in words
A failed test lists the specific readings that missed and by how much — the repair checklist and final retest fields open underneath, and the failed initial readings stay on the record.
Status you can read at a glance
Pass, fail and incomplete always pair an icon and words with the color, which survives glare, sunlight and colorblind eyes.
Offline field workflow
Basements, vaults and rooftops don't have bars
The whole test runs on the device. Nothing waits on a connection, and nothing is lost if the phone locks or the browser reloads.
Works with no signal
Readings, grading, repairs, signatures and the PDF are all generated locally — no request leaves the phone to finish a report.
Autosaved every few keystrokes
The in-progress test is written to on-device storage continuously and offered back for recovery if you close the tab mid-job.
Honest sync status
A saved-locally indicator and an online/offline badge tell you where the record lives without ever blocking the next field.
Queued for later
With an account, finished tests queue and upload themselves once you're back on signal — each with a stable id, so nothing duplicates.
The deliverable
One page, print-ready, generated on the spot
The report is laid out to fit a single sheet no matter how long the facility name or the repair notes are, so what you hand over is consistent every time.
- 8.5 × 11 portrait, one page, no spillover onto a second sheet
- Inspection and facility block, assembly nameplate data, initial readings
- Repairs performed and final retest results when a retest happened
- Tester certification, gauge make/model/serial and calibration date
- Tester and site-representative signatures captured on screen
- Failed readings and failure reasons are always printed, never hidden
About purveyor forms
Water purveyors and states publish their own report forms and rules. BackflowPass produces a complete standard test report — it is not a claim of acceptance by every municipality, and it is not approved or endorsed by ASSE International or the USC Foundation. Check what your purveyor accepts, and keep the report as your own record of the test either way.
Report layouts are versioned, so a report saved last season regenerates the way it was issued.
Tester and gauge profile
Your credentials and test kit, typed once
Certification and gauge data belong on every report and change almost never. Save them, and they land on each test automatically — still editable for the one job that's different.
Tester and company profile
Name, certification number and type, expiration, company name, license, address, phone and email — auto-filled into sign-off, overridable per test.
Gauge kits with calibration dates
Keep the kits you actually carry with make, model, serial and calibration expiry. Pick the kit on the job; the report records exactly which one certified the test.
Snapshots, not live links
Each saved test keeps a frozen copy of the tester, company and gauge details as they were on test day, so updating your profile never rewrites history.
Calibration warning before you certify: if the selected kit is expired or close to it, the readings step says so up front — advisory, not a roadblock.
Pro and Fleet
The office side, for testers who bill every report
Testing stays free. Paid plans handle the paperwork that happens after the truck door closes.
Pro Tester
For the certified tester who bills every report.
- Unlimited cloud history, restored on any device
- Your company logo and branding on every report
- Saved customers and assemblies for two-tap re-tests
- Multiple gauge kits with calibration expiry alerts
- Annual retest reminders
- Advanced history search and filters
Contractor / Fleet
For a crew sharing customers, assemblies and branding.
- Everything in Pro Tester
- Shared company workspace, up to 5 technician seats
- Shared customers, assemblies and report history
- Shared company branding
- Admin and member roles enforced by the database
- Water purveyor email presets for submittals
Pricing
Free to test. Paid when the office work pays for itself.
The full field workflow — every assembly, live math, signatures and the one-page PDF — is free, works offline and needs no account. Free keeps 5 reports on the device.
Free
$0
Free forever · no account
- Every assembly type: RP, DC, PVB, SVB, DCDA, RPDA
- Live pass/fail math on baseline thresholds, repairs and retest
- BackflowPass Standard Test Report, one page (BackflowPass footer)
- Up to 5 reports saved on this device
Pro Tester
Most popular$19/mo
Per month · cancel anytime
- Unlimited cloud history, restored on any device
- Your company logo and branding on every report
- Saved customers and assemblies for two-tap re-tests
- Multiple gauge kits with calibration expiry alerts
Contractor / Fleet
$49/mo
Per month · cancel anytime
- Everything in Pro Tester
- Shared company workspace, up to 5 technician seats
- Shared customers, assemblies and report history
- Shared company branding
Prices in USD; tax is calculated at checkout. If a paid plan lapses nothing is deleted — you keep reading and exporting everything already saved.
FAQ
Straight answers before you start
Do I need an account to write a report?
No. Open the test generator and start entering the site data. Readings, pass/fail grading, repairs, signatures and the one-page PDF all work signed out, offline, on the free plan.
Will my water purveyor accept this report?
That depends on the purveyor. Many accept a complete standard test report; others require their own form. BackflowPass does not claim acceptance by every municipality — confirm your local requirement, and keep the PDF as your own record of the test regardless.
Is BackflowPass certified or approved by ASSE or the USC Foundation?
No. BackflowPass is independent software and is not certified, approved or endorsed by ASSE International, the USC Foundation for Cross-Connection Control and Hydraulic Research, or any agency. The shipped thresholds follow common field-test practice and are configurable when your jurisdiction differs.
Which assemblies are supported?
RP/RPZ, DC/DCVA, PVB, SVB and the DCDA and RPDA detector assemblies. Detector assemblies use their parent rule family and add bypass meter and bypass assembly fields for fire-protection lines.
What happens when a test fails?
The failed readings and the specific failure reasons are recorded, a repair checklist opens (cleaned checks, replaced rubber or spring, relief service or rebuild, plus notes) and final retest fields appear. A successful retest reports as passed after repair, and the original failed readings stay on the record and on the PDF.
Does it really work with no signal?
Yes. The app shell, the calculation engine and PDF generation are all on the device, and the in-progress test autosaves locally. If you sign in, completed tests queue and upload when the connection returns.
Can I put my company logo on the report?
Custom branding — company logo and details in place of the BackflowPass footer — is part of Pro and Fleet. The free report is complete and unbranded apart from that footer.
How do annual retest reminders work?
Each assembly can carry a next-test-due date, suggested one year out. Pro and Fleet show due and overdue lists and can send reminder emails ahead of the due date, with an opt-out per customer.
Can a crew share customers and assemblies?
Yes, on Fleet. An admin owns billing, branding and technician seats; technicians run tests against the shared customer and assembly list without access to billing.
Next assembly you test, write the report on site.
No account, no install, no signal required. Open it on the phone in your pocket and hand over the PDF before you pack the gauge.