Your Trusted Backflow Preventer in Oahu

At All Aloha Plumbing, we provide high-quality backflow prevention services in the Oahu area that will keep your plumbing system in good working order all year round. As a locally owned and operated business, we take great pride in serving the local community with respect and humility. You can always expect us to go the extra mile to put a smile on your face and we will take care of your backflow issues as quickly and efficiently as possible. We are ‘The Plumbers with Aloha’, and we’re ready to get to work for you.

If you need dependable backflow prevention testing in Oahu or the surrounding areas, get in touch with us today for reputable service you can count on.

What Is Backflow Prevention?

Backflow is a situation that occurs when water from your main water supply lines flows in the opposite direction. When outgoing wastewater mixes with incoming water that your family is going to use for drinking, bathing, laundry, or washing dishes, it can create a serious health hazard. Backflow prevention testing means we will check for different issues like back pressure and back siphonage to determine if backflow is happening in your home. 

Our goal with backflow prevention is to keep any contaminated water out of your home, and if backflow is occurring, find a quick solution to get the situation under control. If you suspect there is an issue with backflow in your home, get in touch with us at All Aloha Plumbing as soon as possible to schedule an appointment so we can provide you with the solution you need.

Potential Backflow Risks

Since backflow isn’t obvious to the naked eye, many homeowners take it for granted. It’s important to realize that if it isn’t addressed and fixed sooner than later, there could be serious health risks. Not only could you suffer damage to your plumbing system, but if you don’t have a quality backflow preventer device in place, you may end up with a range of contaminants in your water. These can include bacteria, pathogens, toxic chemicals, and more. The best solution is to get in touch with us, and we will walk you through the process to ensure your household water supply is safe.

Working with Our Team

When you have backflow issues in your home and get in touch with us, you’ll have access to our exceptional plumbing services and memorable customer service that will keep you coming back again and again. We will treat you just like a member of the family, with benefits that include:

24-hour emergency service
Convenient financing options
Honest and upfront pricing with no hidden fees
Courteous plumbers who treat your home with respect
$50 off any plumbing service
$100 off water heater install
$75 off hydrojetting
Senior citizen & military discounts

FAQs

A backflow preventer is a vital plumbing device designed to protect potable water supplies from contamination caused by the reversal of water flow. It prevents non-potable water or substances from flowing back into the clean water system, safeguarding public health and the water supply.

The backflow preventer is installed on water supply lines that may be subject to changes in water pressure, such as sprinkler systems, irrigation systems, or commercial buildings with multiple water outlets. When there is a drop in pressure in the clean water supply, the backflow preventer closes automatically, preventing any contaminated water or substances from flowing backward into the clean water system.

Backflow preventers come in various types, including double-check valves, reduced pressure zone (RPZ) valves, and atmospheric vacuum breakers. Regular maintenance and testing of backflow preventers are essential to ensure their proper functioning and compliance with local plumbing codes and regulations.

Backflow is prevented by using backflow preventers, which are specialized plumbing devices installed in water supply lines at strategic points to ensure that water flows in only one direction. When water pressure in the supply line drops or changes, the backflow preventer automatically closes, preventing any backflow of non-potable water or contaminants into the clean water system.

There are different types of backflow preventers, including:

  • Double-check valve: A simple backflow preventer with two check valves that allow water flow in one direction only.
  • Reduced pressure zone (RPZ) valve: More complex and effective, this device uses two check valves and a relief valve to provide a higher level of protection against backflow.
  • Atmospheric vacuum breaker: Installed on outdoor faucets, this backflow preventer relies on air pressure to prevent backflow.

Regular maintenance and testing of backflow preventers are crucial to ensure their proper functioning and compliance with plumbing codes and regulations, protecting the public water supply from potential contamination.

Backflow prevention is of utmost importance to protect public health and ensure the safety of the water supply. Here are the key reasons why backflow prevention is crucial:

  • Contamination Prevention: Backflow can introduce non-potable water, chemicals, or other contaminants into the clean water system, posing serious health risks to consumers.
  • Legal Compliance: Many jurisdictions have strict plumbing codes and regulations that mandate the installation of backflow preventers in specific situations to safeguard the public water supply.
  • Preventing Cross-Connections: Backflow prevention eliminates cross-connections between potable and non-potable water sources, reducing the risk of contamination.
  • Avoiding Water Quality Issues: Backflow incidents can lead to water quality issues and boil-water advisories, causing inconvenience to consumers and potential economic impacts.
  • Public Health Protection: By preventing the backflow of contaminants, backflow prevention ensures that the water supply remains safe and meets the required health standards.

Backflow prevention is a proactive measure that promotes public health, prevents water contamination, and safeguards the integrity of the water supply system. Regular maintenance and testing of backflow preventers are crucial to ensure their effectiveness and compliance with regulations.

Backflow refers to the unwanted reversal of water flow in a plumbing system, where the water flows back in the opposite direction from its intended path. This phenomenon can occur when there is a drop in water pressure in the clean water supply, causing the water to flow backward and potentially contaminate the water supply.

Backflow can happen due to various reasons, such as a burst water main, excessive demand on the water system, or the presence of cross-connections between potable and non-potable water sources. Cross-connections are points in the plumbing system where potable water and non-potable water (or other substances) can mix, creating a risk of contamination.

To prevent backflow and protect public health, backflow preventers are installed in strategic locations in plumbing systems. These devices ensure that water flows in only one direction and prevent the backflow of non-potable water or contaminants into the clean water supply.

Are you looking for reliable backflow prevention services in the Oahu area? Contact us today to schedule an appointment so we can get started.

Book Your Service






    Brian Rodgers
    Tech worked tirelessly and was informative throughout. Verified work at the end and was meticulous and constantly cleaned up behind himself. This was not a small job. This was a three thousand dollar and three hour project. On another positive note, this man came out both yesterday, Sunday and today, Presidents Day. Our plumber was a competent expert.
    Christine Rivera
    Amazing working, very professional, detailed in explaining what would be done and on time as said! Very satisfied with the work provided!
    Annastasia Debibar
    Great service and very friendly I would recommend they get the job done
    Nelson Omoto
    Joseph was very professional & did an awesome job. Fixed the clog and informed me of different options to future maintain old pipes. Job well done, I would highly recommend!
    Iwie Tamashiro
    We are return customers to All Aloha Plumbing and each time your plumbers were great! Thank you for assigning Joseph to our rescue!! He find him to be trustworthy, personable and more importantly, he does an excellent job!
    Olulani Garcia
    The office staff are courteous and honest in letting you know what the different price ranges are going to be depending on if you need it fixed ASAP or if it can wait for a regular weekday appointment. The technician Kawika was awesome in explaining the various options and exactly what he was doing, also how to at home/DIY trouble shoot some of the easier fixes before making that call out for help again. Thank you Aloha Plumbing and Drain team!
    Brian Spalding
    Mana and Steve did a great job changing the outside water valve and previously Mana changed out a toilet fill valve. Mana was very knowledgeable with plumbing systems and equipment. He also diagnosed and suggested some needed improvements to our old plumbing fixtures and hardware. In the future, I would like to have Mana return for repairs where needed. I trust his extensive plumbing knowledge and hand working performance.
    Mario Domingo
    Kavica did a great job in replacing my water heater. Very well customer service oriented plumber. Keep up the good job Kabika.
    Richard Goto
    Mana was very professional and knew how to solve the problems that arose during the job, and gave suggestions how to solve problems.
    Larry “InThe808” Davis
    Aloha plumbing, courteous, professional and a great price.
    Dean Masai
    We highly recommend All Aloha Plumbing for your plumbing needs. When our sink and washer drains were overflowing, Tyi from All Aloha Plumbing did a super job cleaning out the pipes. He used special tools to clear the pipes and showed us the gunk that was clogging the drains. He also instructed on how to maintain our drains so they would not get clogged. Thanks to his patience, professional skills, and focus, we no longer have to worry about clogged drains at our house.
    Daniel Miyashiro
    Please extend our thanks to Kawika for his outstanding work in repairing a pipe leak in our hot water system. Kawika did the work in a very timely and professional manner. He showed much care when handling fragile parts in our system. In addition, he answered all of our questions in an easy to understand way. Excellent job, Kawika! We appreciate your service.
    Joseph Salvador
    I just had work done by Kawika... he was great and showed lots of aloha ....excellent plumber. He discovered and explained the cause of my problem thoroughly. I truly appreciate a business that comes on a Sunday evening! My only regret, I just saw as I came here to write my review that your business offers a senior discount. I think I would qualify at age 64? Lol! Thank you again for your great service! I definitely will use your company for all my future plumbing needs and pass on my positive experience with friends and family.
    Mel “mel” Y
    All Aloha Plumbing was easy to schedule and service was quick. Of course payment was costly but worth not having to stress about situation. I'd use them again in the future. Mahalo guys!!
    Robert Dale
    I really like the way all aloha does business.The scope of work was clearly stated as well as the price.Clearly a professional organization.
    Derek Yee
    Joseph was able to arrive a little early. He was friendly and got the job done quickly.
    Lynn Graybeal
    Kawika provided outstanding, thoroughly professional service on this project to evaluate and replace a sewerline. He demonstrated high level of competence from the outset. He was on time, organized, efficient and effective in his work. He maintained a safe, neat, uncluttered work site. He took great pains to minimize the damage to our recently landscaped space and devised a way to avoid demolition of a pond. He kept us informed at the right moments throughout the work and explained everything clearly. We recommend him without reservation.
    Anna Pasion
    Had an appointment for 12 noon, was lucky enough to have a technician come over 1 1/2 hour earlier. Joseph was able to address our problems and gave us options to fix the problems without any pressure. Will be calling them again.
    Les Kwock
    Great experience and service! Always treated with courtesy and professionalism! Last minute emergency was accommodated and technician was so efficient in his work and also answered all our questions!
    Rachael Tagupa
    Kawika responded prior to my scheduled appt n did an excellent job !I highly recommend Kawika for yr needed repairs !!Good,efficient quality work done!😁Aloha 🌺Happy New Year!!
    Vanessa White
    Mahalo Ke Akua for Joseph Ahia, he did an amazing job with our emergency toilet leak at our unit at time we needed it the most, our trip to Japan was coming up and unfortunately the toilet needed to be repaired, his professionalism and knowledge gave us peace mind and understanding that the job is completed, given the circumstances, also shout out his supervisor Keone Campbell his guidance in helping Joe better to interact with his customers with his awesome social skills, highly recommended to all my friends and family All Aloha Plumbing 🤙🏽👍🏽👌🏽
    Brittany Awana
    Tyi was very professional and dedicated to resolving the issues in my shower. I am very appreciative of his effort and hardwork.
    Jonathan Kunimura
    We had an emergency water leak at our apartment tower in the middle of a Sunday night, and my staff were frantically calling every on-call emergency plumbing service on the island--All Aloha Plumbing was the only one that answered the phone line quickly, followed up immediately and actually sent a technician over. Joseph arrived, literally, about fifteen minutes after I hung up the phone and was extremely professional, efficient and got the situation under control in no time. I will absolutely use this company for all future plumbing emergencies at all of my properties.
    Cake Works
    Rey is knowledgeable, friendly and easy to work with.I appreciated his help to get our water heater replaced!And then Mike came and helped us with an overflow issue in our sewer line. He even helped with clean-up!Mahalo to All Aloha Plumbing for your timely, friendly and professional service!
    Jean Suzuki
    Our situation occurred at 2:00 a.m. and 2 other companies failed to locate an available technician, even through they claimed 24/7 service. All Aloha was true to their business offering and assigned us Michael Smoker, who called in and was on the job within the hour. He was found to be very skilled, knowledgeable and tenacious in finding a solution for us. We will be signing up for their commercial maintenance program, due to their dedication, professionalism and good work.
    iwa maner
    Overall Amazing & so Professional group of humans at All Aloha Plumbing. From start to finish technicians kept me informed of their every step of progress.If you are ever in need of a plumber do not hesitate to call All Aloha Plumbing. If you are lucky to get these 3 guys Josh, Keoni, & Shack rest assure you will receive top notch service.Mahalo to a Great Team!
    CM Jazz
    Rey provided professional and clear explanations, offering multiple options. He demonstrated experience and skill in the task. He was friendly and approachable, which made it easy for me to ask questions about a topic I knew very little about.
    Henry Jessop
    Absolute descriptive in the issue that needed to be addressed and options for pricing.
    Francis Nakamoto
    All Aloha responded quickly to our needs and found the source of the leak and proposed a repair plan that appears to solve our water leak problem. We haven't proceeded with the job yet but our experience so far has been positive.
    Kathleen Shea
    Ty and Kawika were respectful and informative. Not pushy, but recommended what needs to be done and why. Hope to work with you on in future.
    Destiny Pakele
    Michael explained the problem and fix it without any issues, courteous and professional service.
    kandi amion
    Michael Stoker was fast, effective and friendly. He explained the situation clearly and did the job. Thanks again!!
    Thomas Yokoyama
    Great Service..........Jai was knowledgeable, professional and very courteous! He was able to quickly analyze the problem and give us a solution and a reasonable quote to fix the problem.Very satisfied with the service and will use All Aloha Plumbing and Drain Cleaning again!
    Donna F
    I needed to replace a water heater and having trouble finding a reasonable available plumber on short notice. What I got was much more. An understanding of different types of systems and an adjustment to the water pressure.
    Patricia Seaman
    Deven did a good job fixing our toilet.
    Edwin Yonamine
    Tarren is friendly and professional. He kept us well-informed on his process and explained the estimate in detail. He engaged in a friendly conversation to create a relationship. We enjoyed talking with him and his company. He represented the All Aloha company well.
    Buddy Maunakea
    The plumber Mana was really good and very informative. Hr took the time to answer any and all questions and concerns we had before he started his work... I would recommend this company to anyone who needs plumbing or water heater work
    Rene Tada
    Ty was very professional and did a great job!
    billie bush
    Jai came to the rescue at 10 pm. He checked the situation out and said,”Don’t worry I’m gonna clear this drain for you and get your shower and toilets working again.” Well he kept at it for a while and just like that the clogged drain was clear 👏🏽. I will recommend Jai to everybody!! He came out was so professional about it and got the job done! Much Mahalo’s🤙🏽
    Brian Nanbu
    From the time I first spoke to Gregg to the finished job with Ty, there professionalism shone through!!
    Jeff Tom
    Visiting my mom and she had a leaking bathroom sink faucet, well little more than expected but Michael helped us work through the previous patch. Went the extra mile and was able to get a reasonable price with a guarantee…confident things will work for awhile. Thanks Mike!
    Sophia Wibholm
    Came in the middle of the night and was so friendly and fixed right away, definitely recommend!
    A Sue
    Michael Smoker was very professional and quickly assessed the problem and got the new toilet, replaced and cleaned up really great!!! Greg job!!!!
    Shiloh Francis
    Jai from All Aloha Plumbing was professional and experienced in repairing our leaking pipe. He kept us up to date on his progress and answered all our questions.
    Paul LeBlanc
    Very knowledgeable and kept us informed about our options. Verified cost of services performed before beginning any work. Issue was not a simple problem but it was still resolved quickly.
    Jairus Knudsen
    Very professional and prompt response, Michael was very knowledgeable and was able to offer me solid advice and solution to my problem. Only complaint would be a touch expensive.
    Rei Takayama
    All Aloha Plumbing has exceptional service both through their call center and technicians. Their team of professionals provided seamless and prompt service while giving us different options to not only take care of our program, but also to be proactive in prolonging the lifespan of our lines. Nikki, Greg and Ty along with their whole team were top notch.
    John Beatty
    Tarin Easton did a great job replacing my hot and cold water bathtub faucets and valve stems! He was very professional, proficient, courteous and explained what he was doing every step of the way. Please thank Tarin for a job well done!John BeattyMililani, HI
    Carlton Linda Luka
    Fast. Good. Explain problems and solutionsHire Ty and pay him more
    Cody Ketchum
    Michael Smoker helped us fix our garbage disposal after typical business hours and he was absolutely amazing. He not only was timely with his work but he was very personal and professional. He walked us through the whole process and was informative throughout. Would highly recommend giving this man a raise because he went above and beyond.
    Larry Partida
    Very thorough on the initial plumbing inspection. They found an undiscovered leak under a bathroom sink.
    Wesley Okamoto
    Michael was very personable and professional.
    Heather Smith
    I called with an emergency leak and they scheduled me in for the day. But called back a short time later as they were able to see me sooner! Very professional. Quick, cleaned up, answered all my questions.
    Nicholas Lee
    Tyi from All Aloha Plumbing fixed a leak and seal issue for a toilet at our place of business in HNL Chinatown / Downtown area and was communicative and professional. Tyi clearly explained safety oversights made by the past handyman that we had used to fix a leak issue. Would use All Aloha Plumbing again. Mahalo
    Gabriella Rosen
    From start to finish they did an amazing job! I lost my earring and they responded immediately by sending someone out. Tyler did an amazing job. He found it immediately and was professional. It was easy, quick, positive, and efficient. 10/10 recommend!!
    J Lo
    Thanks to Tarin who was able to come and replace a water heater in a day’s notice. He was expedient and completed the job successfully. Our tenant is now happy that she has hot water.
    Peter Mota
    Mike did a very good job. He’s fast and he’s able to problem solve very well. Changed the water heater nipples to a different material as to prevent corrosion. No leaks… Thxs Mike
    Audrey Sumida
    This is the second time that I'm using this service and very pleased with the outcome. Your technician Jarrett knew within a minute what the problem was and had him work and repair the toilet.
    Stan Yuen
    My parents were very impressed with the service and Aloha . plus they return the following days to assist in issues from the job.
    jcabasug
    they were professional and on time. Michael was thorough and explained everything before work started. He was able to fix our problem, would definitely contact them again.
    Gail Yamamoto
    Deven and Desmond did a great job fixing my water pipes and water heater. Anyone need the best company call All Aloha.
    Charles Takata
    Will call them again if needed.
    William Riddle
    Jai showed up on time and did an excellent job in a timely manner. He explained everything in detail and was very friendly & professional. I would highly recommend this company.
    leilani victor
    Had a water heater melt down and called All Aloha plumbing, and within the hour they were at my home addressing the issue. By the following morning, I had a new water heater and hot water. Extremely professional and very efficient. I will definitely use them again in the future. Thank you so much Tarin.
    Albert Caraang
    Tarin was very knowledgeable, kind, and fast with his work.
    G Keo
    Had a leak on a Sunday afternoon and was able to have someone respond on that same night. I appreciated the professionalism from Nikki and Kawika. I have only gone through the assessment phase but Kawika was patient and thorough with explaining things to me. Very hopeful for good end results. Mahalo
    Courtney Vastyan-Preiss
    Greg and Ty were awesome to work with. So nice and professional!
    Pam G
    Craig the intake person was excellent. He made me feel there was hope I called Fourth of July. My home was flooded and he had a technician came within an hour to assist the issue. They were very friendly, professional and fast.
    Dane Lospoc
    Good service Mahalo 👍
    Rocio Batarse
    Tarin was professional from the moment he introduced himself. His communications skills were excellent, keeping me in the loop with what he found, but most important with resolutions. Tasrin made proposals & we worked together to get things done. I appreciated his documentation. He did excellent work, everything looked pristine after he finished each job, , leaving no trace he had worked in the house! Great job Tarin! I would highly recommend for a plumber! Thx u
    Chris Pinick
    Water heater needed to be replaced as well as hot water line. Bath tub was replaced with stand up shower as well as sink faucet and plumbing. Mana was a solid guy came early, worked late what should have been a three man job Mana did by himself. He even dry walled. Solid job by one solid brahdah.
    colin brede
    Technician very informative to all questions asked, great explanationHe had a dedication to customer satisfaction and there best interest
    Darling Collado
    Very courteous and knowledgeable. They were able to repair all problems in a timely manner. Office staff was helpful in setting up a payment plan as well, in the evening hours no less! Very satisfied with their work. Will use them again.
    Mel Decasa
    Had leaking kitchen faucet with a large sink that needed a professional. Initially the online request sent a confirmation that someone would contact me, but since nobody did, I called, and received an apology, along with the person confirming that it would be noted that the online feature didn't file my request.The next available appointment was 2 days later, though I was put on priority wait list. The next day I got a call that there was an opening, and Teran gave thorough inspection and explanation. I asked if I could add on another sink that was leaking, and Teran said there would be no problem. He also asked if he could inspect the rest of the house. He provided 3 estimates, with the lowest being just for the kitchen faucet. We chose to fix just the Kitchen, though it was helpful to have an assessment of potential problems to watch for. Teran was efficient, friendly, informative, and considerate. We need more like him.
    armando barreiro
    Great service and even better customer service. Tyi was great.
    Kamu Rā
    Tarin did an amazing job. He exceeded our expectation. The resident manager and I (homeowner) appreciated his positive attitude and professionalism. He explained everything to detail and had visuals (pictures) to go along with it. Would highly recommend Tarin working on any job.
    Candace Goo
    Customer service was excellent and someone was able to come by the day I called. Jai was thorough and worked quickly to meet our needs. He did an amazing job and was very easy to work with.
    Lance Moriwaki
    Kai was on time, friendly, professional, and knowledgable.He took the time to explain necessary things, but did not take too long for the overhaul job to be completed. He seemed genuinely happy to be helping me out with my plumbing.
    Chase Conching
    Jai and the entire All Aloha Plumbing group were friendly and professional from day one. They were able to come out on short notice, give me three estimates (with good, better, best options) and perform all the work needed within a 72-hour timespan. No other company I reached out to was able to do that. AAP provided fair and transparent prices, and was even willing to guarantee their work for a much longer time period than their competition. I would highly recommend Jai and the All Aloha Plumbing crew for peace of mind that your plumbing issues will get fixed, for good.
    Jeffrey Acebedo
    All Aloha Plumbing responded to my request on yelp. Heather helped me schedule my appt. Stephanie did a follow up call. My technician Jai was very professional and knowledgeable on my toilet repair, he explained & showed the damages of the toilet. Jai did an excellent job from start to finish. Thank You.
    Diane Shito
    Ty was very helpful and professional. He did excellent work and was very thorough. Very considerate in keeping in mind with my budget. I will definitely recommend All Aloha Plumbing and will definitely call Ty for all my plumbing repairs.
    Dean Yamaguchi
    Ty and Joe were the technicians on the visit. They assessed the problem of a non-draining bathroom sink and while the initial estimate given to clean out the drain was acceptable, they adjusted the charges to reflect time spent to clean the drain which was a pleasant surprise! Also gave a kupuna discount which was also great. Drain runs well now. Guys were on time within the window given and did a great job!
    Emma Toilolo
    Called Saturday, spoke to Stephanie who helped me schedule my repair visit for Monday (only day available because of work) with Ty. Kept me informed and follow up with a call and an email. Tech Ty arrived, assessed the work I wanted/needed done, gave me options and started on the job asap. Replaced old pressure regulator (which was running high) and replaced the old corroded shower water valve (American Standard-no longer available). All done in one day!!Note: developers (Gentry) built with low grade pipes that becomes brittle over time. Ty had to do more than a simple job, putting more doable pipe and connectors. We are at peace knowing the job is done right with warranty to back the work.Mahalo! All Aloha Plumbing, Stephanie and Ty!! Job well done!!
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    Trusted Backflow Prevention Services in Oahu

    Aiea
    Camp H M Smith
    Ewa Beach
    Fort Shafter
    Haleiwa
    Hauula
    Hickam AFB
    Honolulu
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    Kapolei
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    Laie
    Makiki
    M C B H Kaneohe Bay
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    Pearl Harbor
    Schofield Barracks
    Tripler Army Medical Center
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    Waialae
    Waialua
    Waianae
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    Waipahu
    Wheeler Army Airfield
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