The aim of the present study is to analyse possible ways to manage the use of the available water resources by a specific tariff system regulation, according with the Italian context and low system, as defined by «Galli Act», to control and to reduce pollution and environmental effects linked with the various possible water uses in the
agricultural, household and industrial sectors. The national water industry sector, under the push of the above said normative reform, is knowing a deep, even if not very quick, changing process, that should lead it toward a more rational, efficient and economic productive order. At the moment the reform seems to be at the beginning, so that dose not appear very easy to forecast how this process will change the behaviours of the main actors of the system, and which effects, in a long term view, these could produce. In this context we do not feel correct to reduce the analysis in a simple comparative evaluation of different tariff system solutions in a static approach, but appear necessary to develop this matter taking into the right consideration many other aspects of the context, such as, in a particular way, the targets of the subjects that should produce and offer water services, the rules to select them (that dose not seem to lead to save
water resources) and the normative planning instruments adoptable to establish the limit of environmental uses, and to plain a supportable use of natural resources.