Wastewater reuse always comes along with public acceptance, environmental issues and investment costs. One should ensure that these basic requirements are fulfilled. Good understanding and clear definition of the whole procedure must be performed; it is necessary to do a preliminary study. This study must assess the effluent quality (water treatment and disposal needs), identify a potential reclaimed water market and set up an estimation of investment costs of the reclaiming procedure. The study must also provide insight into the viability of wastewater reuse and starting point for detailed planning. Table 1 summarises the major elements which need to be considered.

Table 1: Summary of major elements of wastewater reuse planning (Asano, 1998)