Backwater Valves
Protection against sewer backup in your basement
Overview
A backwater valve prevents sewage from flowing back into your basement when the municipal sewer system is overwhelmed — a documented risk in older Winnipeg neighbourhoods with combined sewer systems. Installation requires accessing the floor drain line and municipal permit requirements may apply.
Common warning signs
- Previous history of sewer backup in the basement
- Foul smell from floor drain during or after heavy rain
- Living in a Winnipeg neighbourhood with older combined sewers
- No backwater valve currently installed
- Floor drain that allows backup with no protection
Possible causes
An on-site assessment is needed to confirm the cause in your specific situation. This list represents common possibilities, not a diagnosis.
- Municipal sewer overloading during heavy rain events
- Combined storm and sanitary sewer systems common in older Winnipeg areas
- Low-lying properties more susceptible to backup pressure
What we inspect
- Current drain configuration and floor drain access
- Existing protection or lack thereof
- Pipe material and condition at the installation point
- Municipal permit requirements for your area
Our process
Assess the current drain configuration
Confirm permit requirements with the applicable authority
Provide a written estimate including permit fees
Install the backwater valve and replace concrete if required
Submit documentation and notify the city if required
Factors that may affect cost
We provide written estimates before any work begins. The following factors may affect the scope and cost.
- Concrete cutting and restoration
- Municipal permit fees
- Pipe depth and access complexity
- Whether a cleanout is being added at the same time
Frequently asked questions
Related services
Have a question?
For urgent issues, call directly. For planned work, use the form.
(204) 555‑0100Request ServiceRequest a callback
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