This Technical Report provides details of filtration systems used for applications ranging from a single house
up to and included 50 PT. The filtration systems receive domestic wastewater from septic tanks manufactured
according to the requirements given in EN 12566-1 and EN 12566-4.
This document is a code of practice and gives design parameters, construction details, installation and
component requirements for constructed sand filters and subsurface flow sand or gravel reed beds.