Still photo from a video sewer inspection, 2000
Mill Creek Sewer under construction, 1883
Allegory of the Schuylkill statue
Wooden Water Pipe, removed from Market Street, December 6, 1901
Bethlehem Water Works, 2011
Roman Aqueduct in Segovia, Spain
Norman Lofton inspects sewer at Ditman and Sheffield, 1987
Sewer crawler Clarence Baskerville checks tunnel for leaks. He has faced the dangers of working in sewers for past three years, 1971
Norman Lofton inspects sewer at Ditman and Sheffield, 1987
Inspector looking for problems in sewer