Plumbing topics · Fixture or system
Backflow preventers
Backflow assemblies protect the public water supply. Which properties need one, RPZ versus double check, and annual testing rules by city.
Answers (90)
- Backflow preventer stolen or damaged: what now?
- Can a backflow preventer be installed vertically?
- Can a backflow preventer cause low water pressure?
- Can a car wash reuse its wash water in Arizona?
- Can a homeowner install a backflow preventer?
- Cross-connection survey vs backflow test: what's the difference?
- Do all homes have a backflow preventer?
- Do apartment complexes need annual backflow testing in Arizona?
- Do I have to register my backflow assembly with the City of Phoenix?
- Do I need a backflow preventer and annual test for my sprinklers in Arizona?
- Do urinal flush valves need a vacuum breaker?
- Does a commercial backflow preventer need an expansion tank?
- Does a dental office need a backflow preventer?
- Does a mop sink chemical dispenser need backflow protection?
- Does a new tenant or change of use require a new backflow assembly?
- Does a soda machine, ice machine or coffee maker need a backflow preventer?
- Does HOA common-area irrigation need backflow testing?
- How do I hire a backflow tester and what's on the report?
- How do I read a backflow test report and its numbers?
- How long does a backflow preventer last?
- How long should I keep backflow test records in Arizona?
- How often does a backflow test kit need calibration?
- How often does a commercial backflow preventer need testing in Arizona?
- Is a backflow preventer supposed to drip?
- Is a backflow preventer the same as an anti-siphon valve?
- Is an NFPA 25 forward flow test the same as a backflow test?
- My backflow assembly failed its test. What happens next?
- PRV vs RPZ valve: what's the difference?
- RPZ vs double-check backflow assembly: what's the difference?
- Should a strainer go before a backflow preventer?
- What backflow protection does a lab or science room need?
- What does a backflow preventer do and how does it work?
- What happens if I miss my Phoenix backflow test deadline?
- What is a cross-connection and why is it dangerous?
- What is a hose bib vacuum breaker and do I need one?
- What is an RPZ hot box and when is one needed?
- What is backflow in plumbing?
- What is on the Arizona backflow tester certification exam?
- Where can an RPZ backflow assembly be installed?
- Where do I send backflow test reports in the Phoenix area?
- Where is my backflow preventer and what does it look like?
- Who is allowed to test backflow assemblies in Arizona?
- Who pays for backflow testing: landlord or tenant?
- Why does an RPZ valve need an air gap and how is it piped?
- Why install two backflow preventers in parallel?
- Why is my pressure vacuum breaker leaking from the top?
- Why is my RPZ backflow preventer spitting water?
- With an RPZ at the meter, do I need backflow devices inside?
- How do I winterize a sprinkler system in Arizona?
- How does a sprinkler system connect to home plumbing?
- What are the different types of water valves?
- What are the plumbing requirements for a restaurant health inspection?
- What is a plumbing final inspection?
- What plumbing does a new laundromat need?
- What plumbing does an emergency eyewash station need?
- What plumbing is involved in a commercial tenant improvement (TI)?
- What plumbing safety devices does a home need to meet code?
- What plumbing should a bar review before adding a countertop glass rinser?
- What plumbing to check before buying a commercial building?
- What plumbing work needs a permit in Phoenix?
- What should a commercial plumbing preventive maintenance plan include?
- Where does a pressure reducing valve go on a water line?
- Why is my outdoor faucet (hose bib) leaking?
- What plumbing changes when a dental office replaces a wet-ring vacuum with a dry system?
- What should a salon check before replacing a shampoo sink?
- Do commercial plumbing repairs need a Phoenix permit?
- Do I need an expansion tank on my water heater?
- Does a change of use trigger plumbing upgrades in Phoenix?
- Does a PRV need a thermal expansion bypass?
- How are irrigation line leaks found at a commercial property?
- How do I get authorized temporary construction water from a fire hydrant?
- How do I plan a water shutoff for my commercial building?
- How often should a multifamily property schedule plumbing inspections?
- What is a Cv flow coefficient, and why does it matter?
- What is a dishwasher air gap and do I need one?
- What is a double detector check assembly on a fire line?
- Who approves and owns an underground fire line in the Valley?
- Why is there no water from my hand shower after I replace its hose?
- Why won't my sprinkler system shut off?
- What are the most common plumbing code violations?
- Will a water-powered sump backup work if my house uses a well?
- Do I need a backwater valve, and when does code require one?
- Do I need a plumber to install a bidet?
- Does a pedicure chair need a drain pump, or can it drain by gravity?
- Does a tabletop dental sterilizer need a water line and drain?
- How do I read the plumbing section of an inspection report?
- How does a frost-free hose faucet work?
- What plumbing code rules apply to a laundry room?
- What plumbing does Maricopa County review in restaurants?
- Why do salon shampoo sinks drain slowly?
Codes and permits (63)
- Arizona Administrative Code R18-4-215: Backflow Prevention and Annual Testing
- Avondale City Code 24-10: annual backflow test, 7-day records and the 20-day shutoff clock
- Avondale City Code 24-6 and 24-7: which backflow assembly you need and where it goes
- Buckeye City Code 17-4-3: backflow assemblies, yearly tests, 10-day repairs and shutoff
- Can a Scottsdale business open on a temporary certificate of occupancy?
- Can Mesa shut off your water for backflow violations? City Code 8-1-13
- Can Scottsdale shut off your water for a backflow violation?
- Chandler backflow testing: annual test, notices and water shutoff
- Chandler City Code 52-36: backflow assemblies on commercial building plans
- Do you need a permit for a commercial water feature in Scottsdale?
- Do you need a permit to install a backflow preventer in Scottsdale?
- Do you need a permit to install a sprinkler system in Chandler?
- Do you need a permit to install or replace a backflow preventer in Glendale?
- Do you need a permit to install or replace a backflow preventer in Phoenix?
- Does a restaurant soda machine need a backflow assembly in Gilbert?
- Does El Mirage require a permit to install a backflow assembly?
- Does every Surprise commercial connection need a backflow device?
- Gilbert Town Code 10-92(c): which backflow assembly does your kind of property need?
- Glendale City Code 33-90: which businesses need a backflow device
- Glendale City Code 33-92: backflow devices on fire sprinkler services
- Glendale City Code 33-94: annual backflow test, records and shutoff
- Glendale City Code 33-99: backflow devices must be on your building plans
- How long do you have to install a backflow device after a Chandler notice?
- How often must a Gilbert business test its backflow assembly, and who can test it?
- How often must a Scottsdale backflow assembly be tested, and by whom?
- Mesa backflow assemblies on building plans, and new inspections when you add equipment: City Code 8-1-6 and 8-1-7
- Mesa City Code 8-1-10: backflow rules for fire sprinkler systems
- Mesa City Code 8-1-11: annual backflow testing, repair deadlines and who can test
- Phoenix City Code Ch. 37: Backflow and Cross-Connection Control
- Queen Creek backflow testing: annual reports go through BSI Online, with a $14.95 filing fee
- Stolen or moved backflow assembly in Tempe: replacement and permit
- Tempe City Code 33-103 and 33-104: backflow assemblies on plans and how to install them
- Tempe City Code 33-105: which commercial properties need a backflow assembly?
- Tempe City Code 33-107: backflow assemblies must be tested every year
- Tempe IPC 608.7.2: which facilities need a secondary backflow assembly?
- Tolleson City Code 10-7-7: backflow testing and the 15-day notice
- UPC Section 603: Cross-Connection Control and Backflow Protection
- What backflow duties does a Phoenix property owner have?
- What backflow protection does restaurant equipment need under Maricopa County plan review?
- What do Pinal County restaurant plans have to show for grease, backflow and drains?
- What happens if you miss a Scottsdale backflow deadline?
- What happens if you skip your backflow test in Phoenix?
- When can Tempe shut off a business's water over backflow? City Code 33-109
- When does a Scottsdale fire sprinkler system need a double check assembly?
- When must a backflow test report reach the City of Surprise?
- Where must a backflow preventer be installed at a Phoenix property?
- Which backflow assembly types does Scottsdale recognize, and how does it rate hazards?
- Which backflow device does a Chandler business need?
- Which backflow device fits which hazard in Mesa, and where does it go? City Code 8-1-4 and 8-1-5
- Which Businesses Need a Backflow Assembly in Each Valley City
- Which equipment needs its own backflow device in Mesa? City Code 8-1-9 point-of-use rules
- Which Mesa businesses must have a backflow assembly? City Code 8-1-8
- Which Phoenix businesses need a backflow preventer, and which type?
- Which Scottsdale businesses and buildings need a backflow assembly?
- Which Tolleson businesses need a backflow assembly?
- Which Youngtown properties need a backflow assembly, and when is it tested?
- Who can test backflow assemblies in Mesa? City Code 8-1-12 recognized testers
- Who tests backflow assemblies at a Chandler hazardous-material facility?
- How long does Scottsdale take to review a tenant improvement with plumbing?
- What does Mesa's commercial plumbing plan review checklist require?
- When does a City of Maricopa tenant improvement need a permit, and what plumbing plans go with it?
- Does a restaurant remodel need Maricopa County plan approval, and what plumbing goes on the plans?
- What plumbing details does Pinal County want in a restaurant plan review?
Guides (1)
Plumbing terms (4)
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