Septic tank
In the United States, the 2007 American Housing Survey indicated that about 20 percent of all households rely on septic tanks, and that the overwhelming majority of systems are located in rural (50%) and suburban (47%) areas. Indianapolis is one example of a large city where many of the city's neighborhoods still rely on separate septic systems. In Europe, septic systems are generally limited to rural areas.
Abbey Mills Pumping Station
Lee Tunnel is a sewage tunnel that travels from Abbey Mills to Beckton Sewage Works and is designed to handle the 16 million tons of overflow sewage that was previously discharged into the River Lea each year. The tunnel boring machine's name, 'Busy Lizzie', was chosen via a competition open to local school children. Thames Water began construction in 2012 and on 28 January 2016, in a visit to the operations, London mayor Boris Johnson opened the tunnel for service.