operational conditions affect the element in physical limits, including diameters only belonging to

dimensions and imply operational diameters. The optimal design of water distribution system installation operational costs subjected limits in operational conditions. Yates et al. established an analysis about computational complexity in minimizing water supply does mean that there instances, depending on physical and initial datas used, which difficult to solve using any specific algorithm. solutions presented in the literature are divided into classes. The first that reduces is not easy to different algorithms system because the problem has multiple local solutions. this present an algorithm to the water distribution system design problem based nonlinear programming problem. algorithm uses