In 1908, Erie started building a waterworks on Presque Isle to provide fresh water for the city. Water from Lake Erie was pumped into two reservoirs on the peninsula, where particulates in the water were allowed to settle, removing them from the lake water. After treatment, the water flowed into the waterlines of the city. In 1917 a pumphouse powered by a steam engine was built: this pumped the water from one basin into the other, then across Presque Isle Bay to Erie. This system of supplying drinking water for Erie operated until 1949. The pumphouse is now used for zebra mussel control and as a concession stand for bicycle and quadracycle-rentals within the state park.