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.
Newtown Creek Wastewater Treatment Plant
The Newtown Creek Wastewater Treatment Plant is the largest sewage treatment facility operated by the New York City Department of Environmental Protection. Since 2010, its eight metallic "digester eggs," which are 140 feet (42 meters) tall and dramatically illuminated with blue light at night, have made it a local landmark, particularly to motorists on several nearby roadways in the New York City boroughs of Brooklyn, Queens, and Manhattan. It is located on the Newtown Creek in Brooklyn's Greenpoint neighborhood along Greenpoint Avenue.