Regional Drinking Water Supply in Pakistan: Regional Disparity, Inequality, and Development Pattern

Abstract

This article explores the regional disparities in water supply coverage in Pakistan in the context of intraregional development patterns. We applied the Gini index, Esteban and Ray index, and Moran’s I to measure regional development patterns in terms of inequality, polarization, and spatial concentration and build an integrated framework combining them with other widely accepted factors to understand regional differences in water coverage quantitatively. Our results show that improved water (tap and pump water) is more widely supplied in Pakistan with lower inequality but higher spatial concentration than tap water supply coverage, although the patterns differ by urban–rural divisions and provinces. Western regions with smaller populations tend to have higher tap water coverage, and eastern regions with large populations are more covered by improved water. The regression models show various mechanisms of improved water and tap water coverage. Both are related to local economic conditions but tap water coverage is more related to local environmental conditions, and improved water is more related to local demographic conditions. Strong and dense population centers decrease improved water coverage but promote tap water coverage. Urban planners and policymakers should address polycentric regional development to fulfill various development targets and improve regional equity of drinking water coverage in terms of accessibility, availability, and quality.