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.

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
Gotelli was able to send a plumber out the day I called. Joey was friendly, knowledgeable, and professional and everything was back in order that same day. Thanks!
Steve Smith and his partner provided excellent service yesterday. They were quick and efficient, honest, friendly and professional. I wouldn't hesitate to recommend them to anyone!
Joey was able to get out to us in the morning and inspect the leak we had outside the house. He figured out how to stop the leak while we figure out the next steps for repair. He also gave us some ideas for work arounds in the meantime. He did a quick inspection of the house and pointed out a few things that could be changed, but since no issues at the moment, not pressing. All and all, happy with the result.
I called Gotelli on a Friday afternoon with a plugged sewer system. The office was very understanding and very promptly answered our plea - dispatching Steve to our house. Steve was quick and very professional with clearing our lines, ensuring that both the house service lines and the lateral to the street were cleared. He also offered to check the pressure to our main water line service to ensure that our pressure reducer was working. And he offered suggestions regarding options for upgrading our hot water heater system. Steve's help and calm, friendly demeaner were greatly appreciated in our time of crisis!
Timely and efficient! I highly recommend.
Love the fact that Joey was able to get here on short notice and that he explains everything as he’s going along. He answered all of my questions and is extremely courageous
Him is Rdly Friendly and knowable absolutely I will call him back for future service
I found a puddle of water under my kitchen sink on a Fri morning. Was afraid I would have to wait until Monday, esp since I had a morning -early afternoon commitment. Tom was @ my door by 2pm, knew a trick to have the dishwasher fill, then in a minute empty - yes it was the garbage disposal leaking. At 17 yrs old it had done it's duty. Tom had the exact modeling in his truck, installed it & cleaned up the wet mess under the sink. Lovely. Will be using them again when I need a plumber.
Steve the technician who came to take care of my plumbing problem was very knowledgeable, professional, respectful and kind. I was very relieved and grateful that Steve was able to solve my plumbing problem. I have used Gotelli in the past and Steve was my technician at that time. He did an outstanding job then and again this time around. Thank you and very much appreciated.
Joey was knowledgeable and helpful. Our job was done quickly and we appreciated that he could come earlier than expected.
Tom has been to our house many times over the years. He's always professional, friendly and knows what he's doing! A great guy and a great company. Thanks Gotelli!
Great company that is there when you need them. Response time is outstanding. Thank you and true professionals. Highly recommend.
They were quick to get me on the schedule and my tech Joey was great, friendly, and efficient.
Gotelli found a solution to my plumbing problem that had been going on for two months! Another company was baffled. I love these guys!
Fernando was professional, great information for us regarding the issue. He has been to our home previously and has always been amazing. I feel we are in good hands!! Issue was solved.
Very professional and super experienced
Thank you Jason Ralph at Gotelli Plumbing for your outstanding service and expertise. We were very happy with the service you provided!!
Tom put in our garbage disposal. Did a great job. Everything was awesome. Thank you. Will call again with the next plumbing problem
Excellent service by Joey and his cohort. Good information and You will be my go -to from now on! Thanks!
Steve and Sebastian were great. Professional and courteous. They spotted the problem immediately and fixed it completely!
Santa Rosa, CA
3200 Dutton Avenue, #423
Santa Rosa, CA 95407
San Rafael, CA
21 Lovell Ave
San Rafael, CA 94901
97604453-4e7b-4120-900b-17b20c3fba84