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Renton Sewer Tunnel ETS-6 12 ft (3.7 m) O.D. 1,056 ft (322 m) First use of Earth Pressure Balance Machine in Seattle [1] 1987–1988 Downtown Seattle Transit Tunnel: Twin 21.25 ft (6.48 m) 13,624 ft (4,153 m) Tunnelling shield First use of waterproofing PVC membrane in USA [1] 1990 Fort Lawton Tunnel/West Point Sewer 15.5 ft (4.7 m) O.D.
Seattle Public Utilities (SPU) is a public utility agency of the city of Seattle, Washington, which provides water, sewer, drainage and garbage services for 1.3 million people in King County, Washington. [3] The agency was established in 1997, consolidating the city's Water Department with other city functions. [4]
Map of London sewer network, late 19th century. Sewerage (or sewage system) is the infrastructure that conveys sewage or surface runoff (stormwater, meltwater, rainwater) using sewers. It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the combined sewer or sanitary sewer.
West Point is one of three major wastewater treatment plants in the area, alongside the South and Brightwater plants. The plant serves Seattle, Shoreline, and other surrounding areas of King County and Snohomish County. Some sewers draining to West Point are combined sewer systems, which carry both wastewater and stormwater.
Rapid industrialization during World Wars, suburbanization of Seattle area Lake Washington Ship Canal (opens 1917) Columbia Basin Project (1933–1950s) Hanford Site (1940s through Cold War) Mount Baker Tunnel (1940) Lake Washington Floating Bridges (1940s–1989) Boeing Everett Factory (1967) Interstate 5 (completed 1969) and Interstate 90 ...
The Census Bureau adopted metropolitan districts in the 1910 census to create a standard definition for urban areas with industrial activity around a central city. [11] At the time, Seattle had the 22nd largest metropolitan district population at 239,269 people, a 195.8 percent increase from the population of the equivalent area in the 1900 census. [12]
The city of Seattle, Washington, is located on a narrow isthmus between Puget Sound on the west and Lake Washington on the east; water comprises approximately 41% of the total area of the city. [1] It was founded on the harbor of Elliott Bay , home to the Port of Seattle —in 2002, the 9th busiest port in the United States by TEUs of container ...
The first water system in Seattle is credited to one of the city's founding pioneers, Henry Yesler.He stored water from springs in a tank located on what is now Yesler Way between Fourth and Fifth Avenues, roughly the location of the Old Public Safety Building on the uphill east edge of the Pioneer Square neighborhood, site of the settlement that became the city.