WEST JUNEAU WEEKLY PICTURE
Maintaining a City Service:
Cleaning the Sewer Line with the Jet-Cleaning Truck
From the City and Borough of Juneau Web Site at juneau.org:
The City and Borough of Juneau Wastewater Collection System is complex system of underground pipes and pumps designed to transport human waste, storm water, and industrial waste from its source to treatment facilities. This system consists of 125 miles of gravity sewer mainlines, ranging in size from 6 to 30 inches in diameter (seventy-five percent of the system consists of 8-inch mains). The system also has 2,304 manholes, 38 pump lift stations and serves approximately 8350 customers. In addition to the piping, there are numerous service laterals, tap connections, pipe joints, interceptors, cleanouts, vaults, pump lift stations, creek crossings, inverted siphons, bar racks, and vent pipes-all of which are integral parts of the wastewater collection system. Because the system is entirely interconnected, each of these components affects the whole system and therefore they must be rigorously monitored and maintained.
Both Pictures by David Kent, 3:09 p.m. ADT, August 7, 2007, © 2007