Backflow Test LogBackflow Test Log
Commercial irrigation backflow checklist
Backflow Assembly Inventory, Fire-Line Alert & Annual Test Log Builder
Enter your assembly count, water supplier, fire-line status, and annual notice due date to generate a multi-valve test log and 30/7/1-day reminder schedule.
Fire line
Questions before you hire
Worksheet preview
Verified: 0 / 5 · Open items / red flags: 5
Enter the date from the notice to see the countdown.
The email contains this worksheet. This plan also sends reminder emails 30, 7, and 1 day before the date you entered.
Block 1. Property and water supplier Label: PVB Assembly Water supplier: Count of assemblies: 1 Next date you entered: Fire-line status: no Block 2. Questions before you hire a tester Ask: is filing the report included, which agency receives it, what happens if the assembly fails. [ ] Confirmed whether tester submits the official pass report directly to the water supplier [ ] Verified which municipal portal or agency address receives the completed test form [ ] Asked in writing what happens (repair vs. re-test fee) if an assembly fails [ ] Checked with the water supplier whether any valve is on a fire-protection line [ ] Recorded serial number and physical meter/vault/riser location for each assembly Block 3. Per-assembly test log Valve # | Serial / Size | Line type | Test date | Tester cert # | Submitted to utility (Y/N) 1 | ________ | ________ | ________ | ________ | ________ Block 4. What this file is not We do not test and we do not file the report. Prepared by Backflow Test Log (backflowtestlog.com). Source notes read 2026-11-13. We are not a certified backflow tester; a water utility; a fire-line contractor.
Commercial landscape irrigation systems—serving office parks, retail centers, apartment communities, athletic fields, and HOA common areas—are classified as cross-connection hazards because submerged rotary heads, puddle runoff, turf herbicides, and fertilizer injectors can siphon directly into public drinking mains whenever municipal pressure drops. Most low-rise landscape zones without chemical injection or elevated piping use a Pressure Vacuum Breaker (PVB, ASSE 1020) or Spill-Resistant Vacuum Breaker (SVB, ASSE 1056), which must pass two hydraulic thresholds under USC FCCC&HR field procedures: the air inlet valve must open at >= 1.0 psid and the spring-loaded check valve must hold >= 1.0 psid. US EPA cross-connection manual notes were read 2026-11-14: https://www.epa.gov/sites/default/files/2015-09/documents/epa816r03002_0.pdf
Whenever a commercial irrigation controller adds chemical fertigation, turf pesticide injection, a booster pump, or hillside zones higher than the preventer, vacuum breakers are prohibited because they cannot stop backpressure—utilities mandate an RPZ assembly (>= 5.0 psid Check #1 and >= 2.0 psid relief port) instead.
Backflow Test Log does not winterize pipes, test irrigation valves, or file municipal reports. Use the log builder above or commercial irrigation checklist plans to document your irrigation assembly count, water purveyor name, and seasonal due date into a printable PDF checklist with optional 30, 7, and 1 day email reminders.
How >= 1.0 psid air inlet and check valve testing works on PVB and SVB devices
Inside both a standard Pressure Vacuum Breaker (ASSE 1020) and a Spill-Resistant Vacuum Breaker (ASSE 1056), an internal spring-loaded check valve prevents reverse flow while a float-and-poppet air inlet valve admits atmospheric air the moment line pressure falls toward zero, breaking any vacuum siphon from soggy turf. During an annual field gauge test, the certified technician verifies two independent readings: first, the air inlet valve must crack open fully at >= 1.0 psid above atmospheric pressure as internal body pressure is bled down; second, the check valve must hold >= 1.0 psid static differential in the direction of flow.
A PVB uses two external test cocks (TC #1 and TC #2) and briefly spills water under the canopy hood when pressurized, making it exclusively an outdoor device. An SVB adds a vent screw and diaphragm seal that prevents startup water spillage, allowing installation in utility closets or near pedestrian entryways while enforcing the exact same >= 1.0 psid air inlet and >= 1.0 psid check differential minimums.
The 12-inch elevation rule and absolute ban on downstream backpressure
The single most common code violation on commercial landscape accounts happens years after the original PVB passed inspection: a landscaper extends drip tubing up a raised planter wall or adds a hillside zone higher than the brass bell housing. Because a PVB or SVB vents to atmosphere, head pressure from any elevated downstream pipe holds the air inlet shut and defeats backsiphonage protection.
Plumbing codes and utility cross-connection standards require the critical level of a PVB (and SVB) to sit at least 12 inches above the highest downstream sprinkler head, drip emitter, or irrigation pipe, with zero booster pumps and zero downstream shutoff valves that stay closed under continuous pressure for more than 12 hours on atmospheric units (PVBs are rated for continuous pressure, AVBs are not). If topography puts any sprinkler head above the valve, the purveyor will require converting the assembly to an RPZ or approved DCVA where permitted.
Fertigation injectors, chemical tanks, and mandatory RPZ upgrades
Commercial campuses, golf facilities, and retail centers that meter liquid fertilizer, wetting agents, rust-stain blockers, or reclaimed water supplements into irrigation mains introduce both toxic health hazards and pump-driven backpressure. Under AWWA M14, California SWRCB rules, Texas 30 TAC §290.44(h), and Florida FAC 62-555.360, chemical-injected irrigation automatically escalates the hazard class to high hazard.
Before your landscape vendor bolts a fertilizer proportioner downstream of an existing PVB or DCVA, verify with the water supplier whether an above-grade RPZ permit and post-installation gauge test are required. Installing chemical feed downstream of a non-RPZ assembly fails municipal cross-connection audits immediately.
Spring startup testing after winter blowouts and freeze damage
In freeze-prone states across the Midwest, Mountain West, Northeast, and North Texas, commercial irrigation lines are blown out with compressed air every October and re-energized between April and June. Residual water trapped above SOV #2 or behind un-drained test cocks routinely cracks brass PVB bonnets, splits plastic float poppets, or warps elastomer o-rings over winter.
Water utilities with seasonal irrigation programs typically set annual test due dates within 10 to 30 days of spring meter turn-on. Coordinate your landscape contractor and certified backflow tester so the irrigation line is pressurized and flushed of winter air before the tester arrives—a tester who shows up to a dry, shut-off irrigation meter cannot run a differential gauge test and will still bill a trip charge.
Counting dedicated irrigation meters separately from domestic building lines
Property managers frequently receive two separate water bills for one street address: one domestic water account for restrooms and kitchens, and a second deduct or irrigation-only meter at the curb with no sewer charge. Each account carries its own customer number, serial list, and compliance deadline.
When reading your water supplier notice, check whether the assembly count covers only the irrigation meter or both meters together. Recording the serial number stamped on the outdoor cage alongside a short label like “West Lawn PVB” prevents confusion when an outdoor poppet kit fails and needs retesting.
Security cages, UV canopy damage, and multi-zone controller pressure drops
Outdoor bronze PVB and RPZ assemblies installed along commercial sidewalks and apartment perimeters are frequent targets for scrap-brass theft and lawn-mower impact. When installing a padlocked expanded-metal security cage around an irrigation preventer, verify that the cage gives at least 12 inches of side clearance for a tester’s gauge hoses and ensure the facility manager or landscaper brings the padlock key on inspection day.
Intense summer ultraviolet exposure also embrittles plastic PVB canopy hoods and internal float guides, causing air-inlet leaks upon spring pressurization. Ask your irrigation technician to inspect the canopy screws and bonnet o-ring during spring turn-on, and keep spare model numbers written alongside your serial list so repairs happen in one visit.
Three-year seasonal log retention and automated spring reminders
Because landscape contractors change more frequently than building mechanical contractors, irrigation backflow paperwork is the easiest record for an HOA board or shopping-center manager to lose. Keep a 3-year seasonal compliance log pairing each irrigation meter number, PVB/SVB/RPZ serial number, spring test date, >= 1.0 psid (or RPZ >= 5.0 / >= 2.0 psid) readings, and utility portal upload confirmation.
Anchor your spring startup date in our irrigation checklist and reminder plans: $19 emails the one-time PDF worksheet, $39/year adds 30, 7, and 1 day email nudges before next spring’s notice deadline, and $149/year covers up to five properties.
What psid readings are required for a PVB or SVB irrigation assembly to pass?
Under USC FCCC&HR and ASSE 1020 / 1056 field test standards, the air inlet valve must open fully at >= 1.0 psid above atmospheric pressure and the internal check valve must hold >= 1.0 psid in the direction of flow.
How high must a Pressure Vacuum Breaker be installed above sprinkler heads?
A PVB or SVB must be installed at least 12 inches above the highest downstream sprinkler head, drip emitter, or elevated zone piping, because vacuum breakers cannot protect against backpressure.
Can a commercial irrigation system with fertilizer injection use a PVB?
No. Adding chemical fertigation, turf herbicide injection, or a downstream booster pump creates a high-hazard / backpressure condition requiring a Reduced Pressure Principle Assembly (RPZ) tested to >= 5.0 psid Check #1 and >= 2.0 psid relief opening.
Should irrigation water be turned on before the backflow tester arrives?
Yes, unless the tester is also hired to perform spring startup. Differential pressure gauge testing requires live municipal water pressure at the assembly; a shut-off seasonal meter prevents testing.
How long should an HOA or commercial property keep irrigation backflow reports?
Keep at least 3 years of signed spring test reports, plastic bonnet/poppet repair invoices, and utility portal confirmation receipts so landscape vendor changes never break your audit trail.
Does Backflow Test Log turn on irrigation systems or submit city test forms?
No. Licensed landscapers and certified backflow testers perform physical startup, gauge testing, and utility portal filing. We email a pre-booking checklist PDF and optional 30/7/1-day reminder emails.