Key points in the practical implementation of greywater recycling systems. The Spanish situation in the global context

Abstract

This paper reviews four different aspects of greywater reuse, the adoption of which is now beginning to spread in Spain. The main aspect addressed is water quality, but legal requirements, costs and the effect on reducing water needs also require analysis. These aspects are of key importance to understand the current way in which greywater reuse systems are developing and, even more importantly, for setting the conditions for future success. In relation to each aspect, the data obtained in a pilot project in Spain is compared to other foreign references.