San-Del Plumbing | Backwater Valve

You spend years saving up for your home and often, it's your pride and joy. Keeping it in optimal shape and avoiding any damage or harm is essential to your peace of mind. 


As plumbers, we often get frantic calls from homeowners that have experienced the tragedy of a flood. Not only is a flood stressful, but it often causes irreparable damage to floors, drywall, furniture and decor. It's heartbreaking for homeowners. The good news is that a flood can often be avoided. If you install the proper tools into your plumbing system, you should be able to prevent a flood -- even if you're in a high-risk area. 


We recommend installing a sump pump alarm and a backwater valve. A backwater valve is a relatively new product that few people have invested in; However, everyone that has experienced a flood wishes they had. 

Backwater Valve in Toronto

We provide backwater valve installation in Etobicoke, Toronto, Vaughan and other surrounding areas. 


Having a backwater valve installed not only helps to protect your home and your valuables -- there's also a monetary incentive for doing it. Our team at San-Del Plumbing has been installing backwater valves for years. We will assess your system before taking the time to install your valve into your system carefully. 


If your home has a basement or if your ground floor falls less than a foot below ground level, you're at a higher risk of flooding. 


Have peace of mind knowing that your house is protected from contamination and flooding of raw sewage and stormwater. Trust San-Del Plumbing for your backwater valve installation in Toronto.

Frequently Asked Questions

What is a backwater valve?

A backwater valve is a one-way flow control valve installed in a drainage system that, under normal conditions, allows the wastewater to drain out of the system. 


In the event that there is a reverse flow of water drainage, the valve will close to protect the home from water damage from the sewage backup. Without backwater valves, thousands of homes are flooded with contaminants such as sewage and stormwater. This costs millions in damages -- all that could have been prevented with backwater valves. 

Where would my home flood?

Most frequently, if a home without a backwater valve floods, it is through the floor drains. If you have a finished basement, this will do irreparable damage to the flooring and surrounding objects. 

How do I maintain my backwater valve?

We will recommend some basic maintenance for the backwater valve, as per the manufacturer's guidelines. Furthermore, during a large rainstorm or snowmelt, you should refrain from taking long showers or doing laundry. The backwater valve will automatically close when large amounts of water are present (to avoid flooding within the home), so excessive water usage within the house risks flooding as well. 

Why should I install a backwater valve?

Experts predict intense rainstorms will become more prevalent in Ontario. Installing a backwater valve can help limit the opportunity of basement flooding. The valve reduces the risk of sewage contaminating your home, which often occurs during extreme weather or if the City's wastewater system hits maximum capacity. 


Before installing a backwater valve, we will perform a camera inspection and locate to determine where the drain exits the home; this will confirm the location of the install. 

Sanitary backwater valves must be installed by a licensed plumber and require ongoing maintenance.

How long will my backwater valve last?

If you maintain your backwater valve properly, it should have a relatively long lifespan. Our technicians will go through the manufacturer's guidelines at the time of installation. We recommend having a plumber inspect and clean the valve one time per year for optimal efficiency. 

Available Rebates

Toronto Rebate

The available subsidy is 80 percent of the invoiced cost up to a maximum of $1,250, regardless of the number of devices installed at the property -- including eligible labour, materials, permit and taxes.

A Building Permit is required to install a backwater valve. The valve must pass inspection by the City of Toronto building inspector to be eligible for the subsidy.

You must also consent at the time of the building inspection or the request of the City:


  • To provide City access to the backwater valve to verify that installation has been completed in accordance with the requirements and conditions of the Program.

  • To the City taking photographs, video and digital images of backwater valves.

For Peel Region (Mississauga) Rebates

The Region of Peel offers a Sanitary Backwater Valve rebate of $700 for eligible homeowners. You qualify if: 


  • You have reported flooding from a rainstorm and can provide proof of an insurance claim for flooding or live within a high-risk area for flooding

  • You haven't received a previous subsidy for flooding


Contact the Region of Peel directly to confirm your eligibility for this rebate program.

For York and Vaughan Region Rebates

The City of Vaughan provides a subsidy to assist homeowners with the cost of installing a Sanitary Backwater Valve. The available subsidy is 50 percent of the invoiced cost of installing an approved backwater valve, up to a maximum of $750, including eligible labour, materials, permit fees and taxes. 


Subsidies are subject to available funding and provided on a first-come-first-serve basis.

"Hired San-Del Plumbing to investigate the loss of water pressure to the second floor of my home. They explained that due to the age of the house it is possible that I may have galvanized water pipes in the wall which are notorious for causing water pressure loss. They opened up an area of the wall and sure enough found galvanized piping.. They removed all the galvanize and replaced it with Pex piping.

I'm very pleased with the results and my water pressure is perfect now. These guys were very knowledgeable and kept their work area clean. Highly recommend these plumbers.."


- Wayne Stevensen  

"San-del plumbing did the plumbing in my washroom when I was renovating it and I couldn't be happier. They are 100% professional and honest. They are very knowledgeable and have no problem answering all your questions and making sure you understand what is and needs to be done. I highly recommend San-del plumbing Ltd to anyone for all their plumbing needs."


- Alise Luongo


Don’t Be Caught In A Flood.

Let San-Del Plumbing help you avoid a flood with the installation of a backwater valve. Our professional team offers free estimates.

Call 416-876-8700 for more information.

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