Complex sentence: It was built between 1871 and 1874 as part of the city's waterworks system designed to provide potable water to the city, including Ellis Island, its perimeter wall in the Egyptian Revival style and pump stations in the Romanesque revival style.
Split into simpler sentences: It was built between 1871 and 1874 as part of the city's waterworks system designed to provide potable water to the city, including Ellis Island. Its perimeter wall is in the Egyptian Revival style and pump stations are in the Romanesque Revival style.