Evaluation of water quality and efficiency to treat water pollution problem in two types of supply water distribution system: loop and, tree in Iraq: By using Water GEMS software

There are a lot of Iraqi cities in Iraq that used tree supply water distribution system, it is also an old network, which produces poor quality this network. This paper has studied two system loops and net Iraqi’s requires Water GEMS. document's goal to review the effect major types on its pollution characteristic Iraq. The results analysis systems show efficiency loop networks compared ones preventing pressure drop, preserving type, pollution. Where dead ends network cause deposition pollutants, increases possibility increase organic unlike ones, makes constant movement, prevents occurrence gives stability.These confirmed by laboratory tests for both cases networks, addition QWI showed can maintain reduce causes through absence from continuous movement water. Although was very because treatment ineffective.