Investigation of Buin Zahra Drinking Water Resources Quality by Using of GWQI

Groundwater is often withdrawn for agricultural, municipal and industrial use by constructing and operating extraction wells. Nowadays, The need for clean water is increasing due to population growth and accelerated industrialization. From the viewpoint of WHO, approximately 80% of all human diseases caused by water. Groundwater can be a safe water for many communities and for this reason may be polluted by many ways. Therefore, it seems essential the protection and monitoring of them.The main object of this study was investigation the quality of Buin Zahra drinking water resources using GWQI. The current study was developed based on multivariate analysis to determine a groundwater quality index (GWQI) with using 9 GWQI parameters with the aim of monitoring the buin Zahra city. Sampling was carried out from seven city (Ardaq, Avaj, Buin Zahra, Shaal, Abgarm, Segzabad and Dansfhan) and representative wells that had the highest discharge. These water resources were monitored seasonally for a period of six month (between May to September). The proportion of observed concentrations to the maximum allowable concentration is calculated as normalized value of each parameter in observing wells. Final indices for each well are calculated considering weight of each parameter. The measurement of parameters were experimented as a duplicate. The results showed that the lower levels of fluoride and higher values of parameters such as turbidity, total hardness, and magnesium in the selected wells that also higher than maximum contamination level for drinking purposes, with considering the rate of groundwater quality index. In terms of GWQI, the quality index of Ardaq, Buin Zahra, Shaal, Segzabad and Dansfhan wells were good, on the other hand. water quality in Avaj and Abgarm wells were in very good condition.