Fairmount Water Works

The Fairmount Water Works in Philadelphia, Pennsylvania was Philadelphia's second municipal waterworks. Designed in 1812 by Frederick Graff and built between 1812 and 1872, it operated until 1909, winning praise for its design and becoming a popular tourist attraction. It now houses a restaurant and an interpretive center that explains the waterworks' purpose and local watershed history. It was designated a National Historic Landmark in 1976 for its architecture and its engineering innovations. It was the nation's first water supply to use paddle wheels to move water.HistoryFollowing a series of yellow fever epidemics in the late 18th century (which was at the time thought to be caused by unclean water or by rotting matter in the streets) city leaders appointed a "Watering Committee". The initial water system was designed by Benjamin Latrobe and accepted by the committee in 1799. His system utilized two steam engines (in series) to pump water from the Schuylkill River, into the city, then into two wooden tanks that held a total of just 57,000USgal. From the wooden tanks, the water was gravity fed into a series of wooden water mains. The system was plagued with problems. If either of the steam engines failed, the water supply to the city was cut off.The committee began searching for another solution and eventually picked John Davis and Frederick Graff (Latrobe's apprentice and successor as chief engineer) to design a new waterworks, in order to meet the demand of the increasing numbers of city residents and to solve the problem of inadequate storage capacity.