Petersham reservoir Reservoir Covered water reservoir commissioned to supply western Sydney and Illawarra suburbs after the completion of the Upper Nepean Scheme. It was integrated into an elevated reservoir on the same site in 1965. Milestone Constructed 1888 {"name":"Constructed","target":"","target_text":null,"date":{"#markup":"<span class='date'>1888<\/span>"},"date_start":"1888","date_end":"1888"} Type Reservoir {"name":"Reservoir","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null}