The Ministry for Resources and Rural Affairs will carry out the appropriate cost benefit assessement (which will assess amongst other matters demand and feasibility of use given the potential contamination by chemicals) with regards to the implementation of a project for the re-use of captured water and the use of grey water to: replace groundwater demand by 2 million m/year by 2020; replace groundwater demand by 3 million m/year from 2021 to 2030. The promulgation of such policy measures should be backed