The evaluation of residual chlorine from well drinking water in some quarters in Erbil city-north Iraq

Abstract

The study was conducted in Erbil city north of Iraq. Everywhere in the world, the drinking water utilities face the challenge of providing water of good quality to their consumers as significant water quality changes can occur within drinking water distribution systems due to contamination. From this study, we have collected water samples from twenty well drinking water in some quarters from Erbil City with three replicas. Our results showed that the maximum value of free chlorine recorded in Badawa and Galawesh quarters which were greater than 0.5 mg/l, while, the values of free chlorine of most quarters were less than 0.2 mg/l, which were not within the recommended safe residual chlorine level of 0.2–0.5mg/l.