Assessment of Groundwater Resources in Southwest of Quchan (Khorasan Razavi province) Implication for Drinking and Industrial uses based on Quality Indices

The study area is located in northeast of Iran, in Khorasan Razavi province. This study evaluated of ground water sources in study area used based quality indexes in 2020.According to the type of geological formation, discharge and location of sources groundwater in the region, 10 groundwater source were analyzed for analysis and evaluation of qualitive The physical parameters such as PH, EC and TDS were meatured in situ using moltimet hydrogeochemical analysis was carried out in the laboratory through induction plasma method The study of chemical analysis of water entering the aquifer of the study area and the use of water quality indicators in terms of drinking and industry showed that the sources of ions entering the southern region of Quchan are affected by lithology and sediments that were exposed to weathering for a long time. In some sources, due to the passage of evaporitic-detrital structures of the third period (marl, salt gypsum and Chilean marl) have solved them and caused an increase in the ratio of Cl + So4> Hco3.M etal indices MI and PI show that groundwater in the study area contains heavy metals and is not suitable for drinking. WQI and GQI indicators show that the quality of drinking water in the area is poor to acceptable. According Langelier, Ryzenar and Pocorius, the groundwater of the region is industrially highly corrosive. Both sedimentation and corrosive properties of water can have consequences such as blockage or destruction of pipes in facilities and even negative effects on human health.