Drain + Sewers

Backflow Preventer

Our backflow preventer keeps things on track with style!

Keep Your Plumbing Flowing In The Right Direction

Backflow Preventer Installation

Backflow is when used water flows back into the water supply. This contamination can be harmful to your home and its plumbing, drains and sewer systems, leaving it vulnerable to leaks and corrosion. Most importantly, however, a contaminated water supply could be dangerous to your health. That’s why it’s crucial to utilize backflow repair and replacement services.

Gotelli Plumbing offers backflow services to identify where your plumbing systems are dealing with backflow problems. Once we locate the problem, our expert backflow repair and replacement services will get your system back in shape! Give us a call to get started.

a backflow preventer system installed in the grass outside

What Is Backflow?

Simply put, backflow occurs when the conditions of the water system cause water to flow in the wrong direction, back into the plumbing systems rather than out of it.

There are two kinds of backflow: back-pressure and back-siphonage.

Back-pressure occurs when water is forced to flow in the opposite direction due to pressure downstream increasing the system pressure.

Back-siphonage occurs when a sudden drop in pressure causes the suction of used or contaminated water back into the water supply.

For example, let’s say a homeowner uses pesticides in their lawn, then waters the yard and water pools around a sprinkler head. Then the fire hydrant down the street is used, causing a sudden drop in water pressure. The water around the sprinkler head can be sucked back into the potable (public) water supply, contaminating the community’s drinking water supply.

Backflow Preventer Installation In Marin and Sonoma Counties

In order to stop used water from reentering your plumbing, a backflow preventer can be installed on your home’s pipes. It prevents water from being siphoned or forced back into the potable water supply.

Backflow preventers are mechanical in nature and have many moving parts, which have a higher potential to malfunction than non-moving pieces — so you should have your backflow preventer tested annually to ensure that it’s functioning properly. If your backflow preventer is broken or experiencing issues, it should be repaired immediately.

3 Types Of Backflow Preventers

There are several different types of backflow preventers, ranging in design, cost, reliability and more. Understanding each kind of backflow preventer is important if you’re looking to have one installed in your home. While your plumber will help you determine which of these options is best for you, the final decision is yours.

Pressure Vacuum Breaker Assemblies

The most commonly used assembly is the pressure vacuum breaker, which has the simplest design — making it easy to install, maintain and repair. This assembly prevents back-siphonage only, not back-pressure.

Reduced Pressure Zone Assemblies (RPZ)

RPZs are the most complex and expensive backflow preventers but, when functioning properly, are the most reliable. This type of backflow preventer can be installed either above or below ground, although above-ground is preferred, and protects against both back-siphonage and back-pressure.

Double-Check Valve Assemblies (DCA)

Double-check valve assemblies are the best option for underground or indoor installations. DCAs are the most commonly approved underground backflow preventer, although they can also be installed above ground depending on the installation code for your area.

Count On Gotelli Plumbing

Many homeowners aren’t sure if they need or already have a backflow preventer in their plumbing system — that’s okay, we can help! Whether you need a backflow preventer, repair or replacement — or simply aren’t sure — give Gotelli Plumbing a call.

We’ve been operating in the North Bay area for over 30 years, so we know a thing or two about the backflow needs of our customers. One of our experienced, professional plumbers will inspect your plumbing and help you determine the best course of action.

Contact us today to speak to a service representative or to begin a service request.

Other Services We Offer

★★★★★ Our cold water stopped and boiler started leaking on Sunday afternoon, by 9:30am Monday the Gotelli team arrived, identified the the issue, and replace the boiler in a few hours. The whole team was professional and friendly. Truly excellent service. Thank you!Georgia DempseyGeorgia Dempsey ★★★★★ Tom Robertson was great, again! Thank you!Response from the ownerWe're so pleased that Tom provided you with great service once again! Thank you for your continued trust in Gotelli Plumbing. We're here whenever you need us and look forward to serving you in the future. Aurora DillonAurora Dillon ★★★★★ Steve is awesome! Second time having him for a jobnathaniel stonenathaniel stone ★★★★★ Joey has great customer service! Prompt, professional and knowledgeable! Highly recommend Gotelli Plumbing Company!John aka Jack “The Saint!” LatchfordJohn aka Jack “The Saint!” Latchford ★★★★★ Great service, got it done pretty fast and no hiccups.Arthur HuArthur Hu ★★★☆☆ A bit odd that the person I made the appointment with didn’t know if their guys work on commission, so I had to ask the plumbers when they arrived which was an awkward conversation for some reason. However, the 2 gentlemen arrived on time and properly diagnosed the probable cause of a sewer smell in one of my bathrooms and even comped me on a drain product I needed in the kitchen. I got a reasonable quote that Friday, but they didn’t have time to do the work that day which I understood.My hose bib was leaking in a couple of places after a pressure test was done, but I’d had some problems with leaking there once before, so the problem may have just popped up again.Response from the ownerHi Amy. I'm so sorry you didn't feel you had a great experience with our company. Per our email conversation, our technician checked the water pressure to the home as that is best practice on every service call. Testing the water pressure doesn't cause leaks. However, I offered to get a technician back out there to see what's going on. You mentioned you'd had issues with that hose bibb leaking in the past and that you wanted to hold off on having someone come out for the time being. Amy WhitneyAmy Whitney ★★★★★ Thorough checking of the possibilities which could contribute to the possibilities causing the leaking of various drainage pipes at my house and pipes in the streetResponse from the ownerRobert, thanks for leaving a review! We appreciate your feedback. Robert PittmanRobert Pittman ★★★★★ A wonderful experience working with Gotelli: they are responsive and professional.Response from the ownerHi Almora! Thanks for taking the time to leave us a review. We're always striving for the best experience for our customers, and are delighted to know that you received the five-star services that you deserve. We look forward to more opportunities to continue serving you in the future. Have a great day! Almora HudsonAlmora Hudson ★★★★★ Very thorough review of my plumbing!Response from the ownerThanks for the stellar review! At Gotelli Plumbing Company, we strive to provide thorough and exceptional service and we look forward to assisting with any future plumbing needs! SD PetSvcsSD PetSvcs ★★★★★ Joe was a true professional and very knowledgeable. We appreciated the service and his level of expertise.Response from the ownerDear Roxanne, thank you for the excellent review! We're thrilled that Joe's professional expertise exceeded your expectations. Thanks again from all of us at Gotelli Plumbing Company! Roxanne BrownRoxanne Brown ★★★★★ Jason was amazing. Went above and beyond.Response from the ownerThanks for your excellent review, Mike! We're thrilled to hear Jason went above and beyond for you. At Gotelli Plumbing, exceeding your expectations is always our goal! Mike RussellMike Russell ★★★★★ Jason showed within a hour of my initial call—-fantastic! Found Jason very knowledgeable, took time to explain how my tankless water heater worked, need for flushing , etc.Response from the ownerWe love to hear this, Mark! We're so happy that Fernando was able to provide you with the type of service we strive for here at Gotelli. Thank you for the five stars! Mark RoachMark Roach ★★★★★ OutstandingResponse from the ownerThank you, Larry! We appreciate your business and we look forward to serving you in the future! Have a great day! Larry FarnhamLarry Farnham ★★★★★ Jason was awesome today! He went the extra mile and totally resolved my issue even in the pouring rain!Response from the ownerThank you for your excellent review, Padme! We're thrilled that Jason's dedication made a positive impact even under challenging conditions. We always aim to exceed expectations at Gotelli Plumbing Company! Padme TatumPadme Tatum ★★★★★ excellent service, timeliness, communication. thank youResponse from the ownerThank you, Alessandro, for the fantastic review! Your feedback is greatly appreciated and we look forward to assisting you with any future plumbing needs! alessandro borronialessandro borroni ★★★★★ I have been working with Gotelli Plumbing for the past few months, and they have been a great company to work with. They are smart, caring, and hard working!Vi WickamVi Wickamjs_loader
Santa Rosa, CA
3200 Dutton Avenue, #423
Santa Rosa, CA 95407
San Rafael, CA
21 Lovell Ave
San Rafael, CA 94901