H2O Services is a City of Toronto licensed Drainage Contractor. We are the only full service Residential Stormwater Management Organization (RSMO) dedicated to reducing the risk of basement flooding while protecting the environment. We specialize in the installations of Backwater Valves and Sump Pump Systems. We administer the City of Toronto Basement Flooding Subsidy Program so homeowners receive a subsidy for the installations of these flood prevention devices.