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
