Investigation of high-turbidity tap water problem in Najaf governorate/middle of Iraq

Abstract Turbidity is a fundamental measure for assessing the quality of water supplied by treatment plants (WTPs) employing conventional process. If it present in amounts exceeding permitted limit, disinfectants are less effective killing microorganisms and becomes unsafe to drink. This article part comprehensive study that aims investigate high-turbidity problem tap two cities Najaf governorate offer suitable measures solve this problem. The purpose was determine how WTPs impact turbidity water. work covered main located governorate: Unified Old Kufa. It included collection samples from three locations each plant: influent flash mix unit (raw samples), effluent clariflocculation (settled filtration (filtered samples). were analyzed using meter. efficacy plant's units revealed monitoring inside facility. For WTP, out 99 TRE readings, there 3, 92, 60 positive values c , f p respectively. maximum 22.3, 86.5, 61.5%, performance Kufa WTP worse than WT. Out values, number 6, 76, 31 They also showed only 26 9 readings WTPs, respectively, satisfy Iraqi standards turbidity. bad reason behind governorate. identified causes proposed solutions.