Welfare consequences of water supply alternatives in rural Tunisia
研究了突尼斯农村公共供水与自供水两种系统的福利效果，计算消费者和生产者剩余，发现两者均因产量低于产能而效率低下。
Abstract Many economic studies have addressed the issue of inefficiency of public water supply in rural areas and the potential for improved service by private companies. Many of these analyses focused on identifying either willingness to pay or comparing average service costs and prices paid by customers. This paper performs a welfare analysis of two water supply systems—public and self owned—in rural Tunisia. The paper calculates consumer and producer surplus and compares the performance of the two systems from a social point of view. Results suggest that both systems are inefficient, mainly because of a production level that is low compared with production capacity.