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Article
Water affordability and social equity in Tunisian governorates: A distributive approach
Water Policy (2015)
  • Maamar Sebri
Abstract
Water as a basic human right must be guaranteed to everyone, at least in a minimum level, to cover drinking, sanitation, and hygiene needs. Using a database for the Tunisian governorates, this paper aims to fulfil two main objectives. First, the amount of water needed to cover basic household requirements is investigated based on the Stone-Geary utility function. Second, the costs associated with the minimum consumption are then utilized to examine the affordability and equity of water tariff based on i) affordability indexes and ii) concentration curves and inequality measurement indexes. Empirical evidence suggests that at the national level, the minimum consumption is estimated at 102 m3 per household per year. Regarding the affordability analysis, water services seem to be affordable in Tunisia, since the minimum water charges represent a very small proportion of the household income. Results reveal also that the distribution of water charges is not proportional to the distribution of household income. Consequently, on the one hand, the small weight of the water charges on the household income allows a margin to increase water prices. On the other hand, the water authority has to consider some intergovernorate disparities in any adjustment of water tariffs.
Keywords
  • Affordability,
  • Concentration curve,
  • Residential water demand,
  • Social equity,
  • Tunisia
Publication Date
Winter February 6, 2015
DOI
10.2166/wp.2014.142
Citation Information
Maamar Sebri. "Water affordability and social equity in Tunisian governorates: A distributive approach" Water Policy Vol. 17 Iss. 1 (2015) p. 26 - 45 ISSN: 1366-7017
Available at: http://works.bepress.com/maamar_sebri/12/