On residential lands, hard surfaces such as the roof, patio, walkways and driveways can all be targeted to collect, treat, and infiltrate runoff. The practices you choose will vary depending on neighbourhood and site constraints [[LINK]] and landscape ideals identified during market research | On residential lands, hard surfaces such as the roof, patio, walkways and driveways can all be targeted to collect, treat, and infiltrate runoff. The practices you choose will vary depending on neighbourhood and site constraints [[LINK]] and landscape ideals identified during market research |