Rehabilitation of water distribution networks: when and how to rehabilitate

Abstract In this paper, a deterioration model is created and used to simulate the life cycle of water distribution network (WDN). Then, two strategies – leakage fixing pipe cleaning are evaluated rehabilitate its capacity attend demand. order implement model, following parameters were considered: growth consumer population, increase in rate, functional reduction hydraulic pumps. For fixing, fixed rate losses was considered throughout entire WDN until reaching minimum reference value reached. rehabilitation, leaning at 1% total length per year. each rehabilitation strategies, cost–benefit analysis carried out using net present value. The results showed that both alternatives can restore WDN, with presenting better economic impact.