This paper focus on policy of drinking water demand with application on Tunisian panel data. We estimate a model which explains consummate volume by the five slices of tariff corresponding to the progressive pricing. Long term results show that prices UP1, UP3 and UP5 has no effects on the...

The aim of this paper is to introduce Contingent Valuation Method (CVM) as an efficient technique allowing to modify the utility level of an economic agent following the consumption of environmental goods. In the absence of market for natural assets, the CVM allows us to create a hypothetical...