A Capacity Study provides an independent technical analysis of existing municipal trunk infrastructure — water distribution, sanitary sewer, or storm sewer — to confirm that the system can accommodate the demands of a proposed development. For larger developments or sites in older serviced areas, available infrastructure capacity cannot always be assumed.
Where trunk systems are operating near their design limits, a capacity study documents existing utilization, projected demands from the proposed development and any committed developments in the tributary area, and the residual capacity available. The study informs whether a development can proceed on existing infrastructure, or whether upgrades or alternative connection strategies are required before the application can be approved.
Capacity studies are increasingly required by municipalities for high-density residential, mixed-use, and large institutional or industrial developments. They are commonly required as part of OPA and ZBA submissions in intensification corridors where multiple developments are competing for capacity in the same trunk systems. A licensed P.Eng. prepares and seals the study.