2022 - Franco Angeli
Article
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The determinants of domestic water demand and the equity of tariffs : empirical evidence from an Italian municipality
P. 373-395
- Since the seventies, an increasing block tariff regime (IBT) for water services has been in force in Italy to prevent water from being wasted and to ensure that all citizens can access an essential amount of water at low prices. This article describes an empirical analysis, based on an original household-level administrative data- base from an Italian municipality, that has three objectives: i) to verify the assump- tions underlying the IBT by estimating the main determinants of water demand, ii) to assess equity and affordability of the tariff in force, iii) to evaluate the effects of alternative tariffs, which take into account the household size and provide a sub- sistence minimum free of charge, and of subsidies targeted to families with limited means.
- The main results show a basically inelastic demand with respect to price and income, a regressive effect of the current water tariff and a significant propor tion of families at risk of affordability, particularly among single and larger house- holds. Alternative tariff methods would not be able to improve the equity of the system because the relationship between consumption and income is too weak. Only effective subsidies targeted to families with limited means can make a difference. [Publisher's text]
Fait partie de
Economia pubblica : XLIX, 3, 2022-
Informations
Code DOI : 10.3280/EP2022-003002
ISSN: 1972-5566
KEYWORDS
- Water demand, price and income elasticity, tariffs, distributive effects, affordability
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