The sanitary back-water valve is designed to protect basements from flooding caused by flooded sewers during severe weather events. Homes with a back-water valve installed can significantly reduce the risk of basement flooding and prevent damage to the home.

The City of Vaughan introduced the Back-water Valve Subsidy Installation program to assist owners with the cost of installing an approved back-water valve. The City will cover up to a maximum of $750 including eligible labour, materials, permit fees and taxes. Keep in mind that the back-water valve must be installed by a certified plumber. All subsidies are subject to available funding and provided on a first-come-first-served basis.

Frequently Asked Questions

Why should I install a back-water valve?
Installing a back-water valve can help decrease the incidence of basement flooding by reducing the risk of wastewater (sewage) entering your home. Basement flooding can happen during a severe weather event or if the City’s wastewater system reaches its maximum capacity.

• building permit number
• street address
• type of inspection required
• contact name and telephone number
• preferred inspection date

• A completed application form (PDF). The application must include a verifiable College of Trades membership number.
• A copy of the invoice. The invoice must show a complete breakdown of all charges as well as the plumbing or drain license number of the contractor, the total amount paid. The invoice must also be marked as Paid in Full.
• A copy of the completed building permit.

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