Basement protection · Kelowna & area
Backwater valve installation in Kelowna
A backwater valve lets wastewater leave the house but closes if the sewer backs up, so sewage cannot come up through basement floor drains, toilets and showers. We install them on the main drain inside the home and service the ones you already have.
Anderson Plumbing and Gas Fitting · owner-operated · last updated
Quick answer
For backwater valve installation in Kelowna, call Anderson Plumbing and Gas Fitting at (250) 859-3548. We install a backwater valve on the main building drain inside the house, with an access cover so it can be checked and cleaned, and we inspect and clean existing valves.
A backwater valve is a one-way valve on the main drain that carries everything out of the house. Water flows out normally; if the municipal sewer backs up, a flap closes so sewage cannot flow back in and up through the lowest drains in the home, usually the basement floor drain, toilet or shower.
It matters most for homes with plumbing fixtures in the basement. Where the main drain runs under a concrete floor, installing one means opening the floor at the right spot, fitting the valve in line with the drain, and finishing it with an access cover so the valve can be inspected and cleaned.
Plumbing permits come from your city or district. We tell you what your job needs when we quote it. Some home insurance policies also ask about backwater valves, so it is worth checking with your insurer.
What affects the price: where the main drain runs and how deep it is, whether the floor is finished, how much concrete has to be opened, and the drain pipe material and size.
Services covered
New backwater valve installation
A valve fitted on the main building drain inside the home, with an access cover so it can be reached for checks and cleaning.
Inspection and cleaning
Existing valves checked so the flap opens and closes freely, with debris and buildup cleared.
Repair or replacement
A sticking, damaged or missing flap or cover repaired or the valve replaced.
When a backwater valve is worth a look
- A toilet, shower or floor drain in the basement
- Water or sewage has ever come up through a basement floor drain
- Finishing or renovating a basement
- Your insurer has asked whether you have one
- You have a valve but have never had it checked
Licence and how we work
Gas contractor licensed with Technical Safety BC (LGA0212697).
- Owner-operated. The owner quotes every job and is on site for the work.
- A fair, upfront price first. You get the price before any work starts, so you can say yes or no before you are committed.
- Gas work under permit. We pull the permit on gas work, and we can put the permit number and our licence number on your invoice.
- Honest repair-or-replace advice. We assess the job first and explain your options in plain language. If a repair makes more sense than a new unit, that's what we'll tell you.
Questions, answered
What does a backwater valve do?
It lets wastewater leave the house but closes if the sewer backs up, so sewage cannot flow back in through basement drains.
Where is a backwater valve installed?
On the main building drain inside the home, usually under the basement floor, with an access cover so it can be inspected and cleaned.
Does a backwater valve need maintenance?
Yes. The flap has to move freely, so it should be checked and cleaned periodically; follow the manufacturer’s instructions for how often.
Do I need a permit?
Often, yes, from your city or district. We tell you what your job needs when we quote it.
Can you add one when finishing a basement?
Yes. Before the floor is finished is the easiest time, since the drain is easier to reach.
Areas we serve
Kelowna, West Kelowna, Lake Country (including Oyama), Vernon and Peachland.
Get an honest answer and a fair, upfront price
We are open 24/7 and tell you honestly when we can be there. You get the price before any work starts.