The P.E.I. and federal governments are both pitching in to help build a new water tower in Cornwall. Cornwall is P.E.I.'s fastest growing community, with a population that grew 23 per cent between the 2016 and 2021 censuses. Water pressure has been an issue for some residents. The tower will not only increase the capacity of the town's water system, said Coun. Elaine Barnes, chair of water and sewer, but also provide backup supply.