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In this research, reliability indicators of water distribution networks are evaluated under pipe failure conditions. The case studies include two benchmark and one real-life water distribution networks in Iran with more hydraulic constraints. Some important reliability indicators are presented, such as resilience index, network resilience, modified resilience index, and minimum surplus head index.

Sectorizing a network into district metered areas is a key technique for water loss reduction. Sectorization is a well-studied problem. Optimization techniques can be used to find solutions to such problems, but doing so within a reasonable time remains a challenge. We introduce two heuristic tricks to modify a basic evolutionary algorithm that solves this problem. The tricks reduce the time needed to find good solutions but also lead to solutions that better match drinking water practice.