Assessment of Drinking Water Treatment based on Free Residual Chlorine in Rabak Town – White Nile State – Sudan 2010

Abstract

Dirty and polluted water can contain many harmful agents. These can cause diseases and many health problems. Treatment of water aims to remove these pollutants and causatives of diseases. This study aims to assess drinking water quality based on free residual chlorine, after collection of samples from different locations: plant of treatment and distribution system (12 represented samples) then all samples were analyzed immediately. The study revealed that 33.3% of samples showed free residual chlorine as 0.1mg/L and 66.7% of samples demonstrated it absence, while WQI ( water quality Index) according to free residual chlorine is 6.7. All analyzed samples showed that pH of water were in normal range (6.5-8.5). While WQI based on pH indicated the water quality ranged 25% of samples bad and 75% of samples medium. Throughout the results of this study observed treatment of drinking water is insufficient and pH of water is appropriate for chlorination. The study recommended that more chlorine must be added for proper treatment process