Since October 1, 2026, Rénoclimat’s Adaptation stream helps homeowners protect against sewer backups and flooding. Installing a backwater valve can be supported up to $700, and the climate resilience assessment required for some paths up to $1,000. Work must be done by a licensed contractor after October 1, 2026.
Work covered
- Backwater valve on the sewer line
- Submersible sump pump with battery backup
- Removable flood barriers
- Other resilience work identified in the assessment
Who is eligible
The new measures target principal residences and residential multi-unit buildings such as duplexes and triplexes. Check the list of recognized professionals and the participant guide on Québec.ca before starting.
Backwater valves: what to know
- It stops sewage from backing up into the basement when the system overloads.
- It must be installed by a licensed plumber, to code.
- It must stay accessible and be maintained at least once a year.
In Montreal, the City’s RénoPlex program also covers flood resilience: see RénoPlex. After a flood, see flood assistance. Official source: Rénoclimat news on Québec.ca (in French).
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Amounts checked in October 2026. Confirm exact criteria in the Rénoclimat participant guide before work.