After successful demonstration of the SAT principle with an experimental project in the Salt River bed west of Phoenix, the city of Phoenix was interested in renovating wastewater by soil-aquifer filtration on a larger scale. This led to the construction of the 23rd Avenue Project in 1975.
BOUWER, H. ; RICE, R.C. (1984): Renovation of Wastewater at the 23rd Avenue Rapid Infiltration Project. In: Journal Water Pollution Control Federation: Volume 56 , 76-83. URL [Accessed: 23.04.2015]