Highest protection — required for commercial, chemicals, irrigation with fertilizers
DCVA — Double Check Valve Assembly
Fire sprinklers, multi-family, general commercial applications
PVB — Pressure Vacuum Breaker
Residential irrigation — most common in FL homes
AVB — Atmospheric Vacuum Breaker
Low-hazard residential, individual zone protection
Need Assessment
Not sure what I have or if one is required
Step 2 of 4
What type of installation?
🏠 Residential Irrigation
Home sprinkler system, hose connection
🌿 Commercial Irrigation
Business landscape, HOA common areas, golf course
🏢 Commercial Building
Office, retail, hotel — main water service protection
🍽️ Restaurant / Food Service
Health department requires annual testing documentation
🏭 Industrial / Specialty
Chemical handling, medical, high-hazard applications
Step 3 of 4
What service do you need?
🧪 Annual Test Only
Device passed last year — just need certified test & paperwork
🔧 Test + Minor Repair
Expect device may need parts — seals, springs, disc replacement
🔩 Test + Rebuild
Device failed last year or hasn't been serviced in years
🆕 New Installation
Adding a backflow preventer where none exists
🔄 Full Replacement
Device is corroded, cracked, or beyond repair
Step 4 of 4
Where in Florida?
South FL
Miami-Dade / Broward / Palm Beach
Tampa Bay
Hillsborough / Pinellas / Pasco
Jacksonville / NE FL
Duval / St Johns / Clay
SW FL
Collier / Lee / Charlotte
Panhandle
Pensacola / Tallahassee / Panama City
💰 Your Estimate
📞 Schedule Service
FL certified testers — we file the paperwork with your utility. Same-week appointments available.
5 FL Backflow Facts Property Owners Must Know
Fact 1 — Florida Leads the Nation in Irrigation Systems
Florida has over 4 million irrigation systems — more than any other state. Every one connected to a public water supply must have a backflow preventer to protect drinking water from chemical fertilizers, pesticides, and biological contaminants. Florida Administrative Code (FAC) 62-555.360 mandates this statewide.
Fact 2 — Annual Testing Is Legally Required
FAC 62-555.360 requires annual testing of all backflow prevention assemblies connected to FL public water systems. Tests must be performed by a state-certified backflow tester. Results must be filed with your local utility within their specified deadline (typically 30–90 days of the anniversary date). Non-compliance can result in fines and service interruption.
Fact 3 — Hard Water Accelerates Device Failure in FL
Florida's hard water (100–350 mg/L calcium carbonate) causes mineral deposits that clog check valves, stiffen springs, and corrode elastomer seals inside backflow preventers. South FL devices serving hard water areas may require rebuild or replacement in 5–8 years vs. the 10–15 year lifespan in soft water regions. Annual testing catches deterioration before failure.
Fact 4 — South FL Utilities Have the Strictest Enforcement
Miami-Dade Water and Sewer, Broward County, and Palm Beach utilities are among the most aggressively enforcing FAC 62-555.360. Service shutoffs for non-testing are actively executed. Restoration fees average $150–250 plus all back-testing costs. The enforcement contrast with rural North FL utilities (where compliance is largely voluntary) is stark.
Florida Plumbing Code Section 608 (based on IPC Chapter 6) specifies which backflow protection is required for each hazard level. A licensed FL plumber must install or replace backflow preventers. Improper device selection — for example installing a PVB where an RPZ is required — is a code violation regardless of whether it was tested and certified.
Backflow Device Comparison
Device
Hazard Level
Annual Test?
FL Common Use
Cost Range
RPZ
High
Yes — required
Commercial irrigation, chemicals
$500–1,400 installed
DCVA
Medium-High
Yes — required
Fire suppression, multi-family
$350–800 installed
PVB
Medium
Yes — required
Residential irrigation
$200–500 installed
AVB
Low
No (not an assembly)
Individual hose bib
$15–50 DIY
RPDA
High
Yes — required
Large commercial, fire w/ additives
$800–2,500 installed
FL Utility Enforcement Overview
Utility
Enforcement
Testing Deadline
Shutoff?
Miami-Dade Water & Sewer
Strict
Anniversary + 30 days
Yes
Broward County
Strict
Annual + 60 days
Yes
Palm Beach Utilities
Moderate
Annual + 90 days
Warning first
Tampa Bay Water / TBW
Moderate
Annual + 90 days
Warning first
JEA (Jacksonville)
Light
Annual
Rare
Rural/County utilities
Light
Self-reported
Rarely
⚠️ Non-Compliance Consequences
Missing annual testing deadlines can result in: water service shutoff ($150–250 restoration fee), utility fines ($50–500/day in some jurisdictions), health department citation for food service businesses, and loss of irrigation permit. File your test results promptly — late testing still incurs fees in most FL counties.
📋 FAC 62-555.360 Quick Reference
Key requirements of Florida's backflow prevention rule:
• All assemblies (RPZ, DCVA, PVB) must be tested annually by a FL-certified tester • Test results must be filed with the serving utility within their specified timeframe • Devices that fail must be repaired or replaced within 30 days • Only FL-licensed plumbers may install or replace backflow assemblies • AVBs (non-assemblies) are exempt from annual testing requirement
📞 Schedule Your Annual Test
Backflow Testing & Compliance Process
5 steps from scheduling to certification filed.
📍
Step 1: Locate Your Device
Backflow preventers are typically found: in the irrigation controller box or adjacent valve box (residential), at the point where the irrigation supply tees off from the main (1–3 ft above grade), or in the mechanical room of commercial buildings. Look for a device with two shutoff valves and two test ports (cocks). If you can't find it, your plumber can locate it during service.
📅
Step 2: Schedule Before Your Deadline
Your utility assigned a testing anniversary date — it's printed on your last test report or your utility bill. Schedule at least 2–3 weeks before your deadline. FL utilities begin enforcement 30–90 days after the due date. Most FL certified testers offer same-week scheduling. Only hire a FL-certified tester (verify certification at myfloridalicense.com or your utility's approved tester list).
🧪
Step 3: What Happens During the Test
The certified tester attaches differential pressure gauges to the test cocks and reads the pressure differential across each check valve. For an RPZ, they also verify the relief valve opens under proper conditions. The test takes 20–40 minutes. Water service to the zone tested will be briefly interrupted. You do not need to be present — just provide access to the device location.
🔧
Step 4: If It Fails
Minor failure: Worn seals, weak springs, sticky disc — tester can rebuild on-site for $150–350 in parts and labor, then retest immediately.
Major failure: Cracked body, corroded internals beyond rebuild — FL FAC requires repair or replacement within 30 days. Your tester should document the failure reason and provide a written quote.
Do NOT leave a failed device unreported — that's a code violation in FL.
📄
Step 5: Certification Filing
After a passing test, your certified tester completes a FL Uniform Test Report form. This is filed with your utility — a reputable tester does this for you. Request a copy for your records. Most FL utilities process electronically within 2–5 business days. If using an irrigation permit service or HOA, they may also require a copy. Keep all test reports for at least 3 years.
📋 FL Annual Testing Law
FAC 62-555.360 requires annual testing of all backflow prevention assemblies connected to FL public water. Non-compliance can result in fines and service interruption. Only FL-certified testers may perform legally recognized tests. Verify your tester at myfloridalicense.com.
12-Point Compliance Checklist
0 of 12 complete
Located your backflow preventer and confirmed device type (RPZ/DCVA/PVB)
Found your testing anniversary date from last report or utility bill
Verified tester certification at myfloridalicense.com
Scheduled FL-certified tester at least 2 weeks before deadline
Provided access to device location for tester
Annual test completed by certified tester
Device PASSED — or repair/replacement completed within 30 days
FL Uniform Test Report completed and signed by tester
Test report filed with your utility by your deadline
Copy of test report kept for your records (keep 3 years)
Food service / restaurant: copy filed with health department
Next year's testing date calendared — schedule reminder set
📞 Book Your Test Today
Built for Florida homes - accounting for Florida's hard water and county permitting.
On this page, Florida backflow estimates run about $800-$2,500, depending on home size, materials, and project scope. Use the calculator above for a Florida-specific estimate.
What affects the price?
Pricing depends on the size and layout of your home, the materials and fixtures you choose, your Florida region and local labor rates, and permit fees. Work that is more complex or harder to access generally costs more.
Can I DIY this, or should I hire a licensed plumber?
In Florida, minor maintenance may be DIY, but anything beyond that generally calls for a licensed plumber, and many jobs require a permit and inspection. When a permit, or your main water or drain lines are involved, hire a Florida-licensed plumber.
Does homeowners insurance cover it?
It depends on the cause and your specific policy. Sudden, accidental damage is more often covered than gradual wear-and-tear or maintenance - confirm the details with your insurer.
How long does it take?
Timelines depend on scope - many routine jobs take a few hours to a day, while larger projects run longer. Your licensed plumber can confirm after assessing your home.
Plan with confidence
Planning estimate, not a quote — confirm with a licensed Florida plumber. Confidence is qualitative: ranges reflect this page’s Florida assumptions, not a guaranteed price.
Key assumptions
Estimates on this page are Florida-specific and reflect Backflow for typical Florida homes.
From this page: On this page, Florida backflow estimates run about $800-$2,500, depending on home size, materials, and project scope. Use the calculator above for a Florida-specific estimate.
Your actual cost depends on your home's condition, layout, and local labor and permit rates.
Factors that raise or lower cost
From this page: Pricing depends on the size and layout of your home, the materials and fixtures you choose, your Florida region and local labor rates, and permit fees. Work that is more complex or harder to access generally costs more.
Generally raises cost: harder access, older homes, added permits and inspections, premium fixtures or materials, and emergency or after-hours work.
Generally lowers cost: easy access, bundling several items in one visit, standard fixtures, and off-peak scheduling.
Preparation checklist
Clear access to the work area and locate your main and fixture shut-off valves.
Check with your county or city building department (AHJ) on whether a permit and inspection are required.
Note the make, model, or measurements of existing fixtures and pipe materials.
Get the scope, total price, warranty, and cleanup terms in writing before work starts.
Verify the plumber holds an active Florida license and carries insurance.
Questions to ask your plumber
Are you licensed and insured in Florida, and who pulls the permit?
Is the quote itemized for parts, labor, permit fees, and disposal?
What could change the final price once the work begins?
What warranty covers the parts and the labor?
How long will the job take, and will my water be shut off?