The growing urban population in developing countries with restrictions on the provision of housing becomes one of the major problems of municipalities to provide services required and urban infrastructure such branches are different. In this study the municipal toll and connections cost of...

Since early times water has always been considered as the most important factor in development and applying the new, has played the vital part in obtaining the goal of food supply for the world's growing population. The shortage of sweet water in recent years has become a global problem and...