LAUSR

ABSTRACT This article examines the impact of a project to improve water services in underserved neighbourhoods in Ouagadougou on household water access conditions. We used the propensity-score matching method to analyse data from a survey carried out in 2011, and found that the improvement project cut the cost of water neighbourhood-wide by 94 CFA francs per cubic meter, reduced the portion of this expense by 1% of the average household budget, and cut the daily time to collect water by 10–13 min. The results that we obtained through the propensity-score matching method differ from those obtained by simply comparing the averages of the neighbourhoods participating in the project to those that did not participate. This indicates that the propensity-score matching method of impact evaluation is valuable in supplying decision makers with nonbiased estimates of the link between ease of access to water and poverty reduction.