Assessment of the Water Quality of the Mollusca Community in the Janabi River-Hay City of Wasit Province by Using Canadian Water Quality Index

Abstract

The Canadian Environment Council Water Quality Index (CCME-WQ) of the Janabi River water at Hay  City in Wasit Province has been assessed and analysis for over all, drinking water and aquatic life and the impact of the river environment on presence and mollusca community. The samples were collected monthly during 2020, Most of the variables exceeded the Iraqi and global permission limits. It was clear that this index values was marginal category for over all purposes which ranged from 45-48 at all sites, while this index values was poor-marginal categories which ranged from 37-50 for all season, On the other hand the water quality index values for drinking purposes was poor category which were recorded from 40 -42 for all sites, also it was  poor category which was ranging from 31-44 for all season. The values of this index for aquatic life was in the poor-marginal category which ranging from 38-61 for  all sites and  in the marginal- fair categories which ranging from 61-67 for  all season. Nine species of mollusca was identified belonging to seven families. Two species of Melanopsidae and Cyrenidae and one species for Thiaridae, Physidae, Neritidae, Dressseinidae and Unionnoidae. It was concluded that the water of the Janabi River was highly polluted and undrinkable water characterized, as well as, it’s a clearly appeared impact of the river water quality on the mollusca densities.