From the original wooden pipes from the 1800's to modern day systems, sewer systems have been a public health concern in urban and rural areas. The report gives technical and design specifications on the new modifications available in sewer systems, including hydraulic characteristics, construction costs, operation and maintenance, and services and infrastructure support.
AZEVEDO NETTO, J REID, R. (1992): Innovative and Low-Cost Technologies Utilized in Sewerage. (= Technical Series No. 29 / PAHO Environmental Health Program ). Washington, D.C.: Pan American Health Organization