Backwater valve installation in Newmarket.
A backwater valve closes automatically when the municipal sewer surcharges, so it cannot push sewage back into your basement. We assess whether your drain layout allows one, install it to code, and show you how to check it.
Does my house need a backwater valve?
If your basement has a floor drain or bathroom and the municipal sewer can surcharge in heavy storms, a backwater valve stops sewage coming back up the drain. Not every drain layout allows one, so we camera the building drain first and tell you honestly.
When a heavy storm overloads the sewer, water looks for the lowest opening it can find, and in Newmarket that is usually a basement floor drain or a basement bathroom. A backwater valve sits on the building drain and closes when flow reverses, so the surcharge stops at the valve instead of in your finished basement. It is one of the most effective pieces of flood protection a home can have, and it only works if it is installed in the right place.
Not every house can take one. The drain layout has to let the valve protect the basement fixtures without blocking them, and the valve has to be accessible for cleaning. Seal Plumbing starts with a camera inspection of the building drain, tells you honestly whether a valve will work for your house, and then installs it with the access box, to the Ontario Plumbing Code, with the permit it needs.
Pete and Joseph do the work themselves and quote it in writing. Our backwater valve guide explains how they work. See also sewer line repair if the camera finds a problem with the drain itself.
Backwater valve work in Newmarket
- Drain layout assessment with camera
- Backwater valve installation on the building drain
- Access box & cleanout
- Permit & inspection
- Annual valve checks & cleaning
- Sump pump & floor drain coordination
How does backwater valve installation work in Newmarket?
Camera the drain, confirm the layout works, install with access, inspect.
Get in touch
Tell us whether you have had a backup, or want to prevent one. We explain what the assessment involves.
Assess
We camera the building drain and confirm where the valve can go and which fixtures it will protect.
Install
Floor opened at the right spot, valve set in the drain with an access box, concrete restored.
Inspect and show you
The installation is inspected and we show you how to open the lid and check the flap.
What does backwater valve installation cost in Newmarket?
Backwater valve installation in Newmarket is quoted in writing after the camera assessment. The price depends on where the building drain runs, how much floor has to be opened to set the valve and access box, and the permit through the Town of Newmarket.
Every job is quoted before work starts, in writing for anything beyond a small repair, and the quote is the number that counts. Same-day quotes on most small jobs; larger projects within 24 to 48 hours of a site visit.
What other plumbing services do you offer in Newmarket?
The same two licensed plumbers, across everything a Newmarket home needs.
What does your recent work look like?
Underground drains, basement rough-ins and repairs from recent jobs across the GTA and Simcoe County. Tap a photo for a closer look.
Which Newmarket areas do you serve?
From the Main Street core to Stonehaven, Woodland Hill and Glenway, plus Summerhill, Huron Heights and every subdivision in between.
Also serving nearby: Aurora, Bradford, King City, Richmond Hill and Stouffville. See all service areas →
Need something else? See our Newmarket plumber page or the full service and repairs overview.
Backwater Valve Installation questions Newmarket homeowners ask
How do I get started?
Call 647-402-4825 or send a few details through the contact page. You get an estimated arrival time on the call and a written quote before any work starts.