Investigation of Pesticides Effect and Heavy Metals on the Quality of Drinking Water in the Wells of Sari City

The purpose of this study was to investigate the pollution of sari wells caused by heavy metals and determine its origin. In this research, after conducting related and basic studies, field surveys, interviews with experts and residents of the area under consideration, and sampling and testing, to identify heavy metal, copper, zinc, lead, cadmium, chromium, and mercury contamination in Selected Stations Effective in the Environment. Then to collect basic information from organizations, agencies, and various departments and GIS maps were prepared. To analyze and determine the source of heavy metals pollution using the provided maps, information obtained from the databases of the organizations, and the organs and departments, drinking water standards, the results of the experiments, and the map GIS was used.Considering heavy metal sampling in different seasons and different stations to confirm the presence of heavy metals in minerals and compare these metals with drinking water standards and to investigate and locate the natural factors and human factors making the input of these metals to the water of Sari wells It was found the origin of the arrival of the metals in the river as well as man-made factors, especially the use of pesticides in rainy seasons and natural factors in particular geological structure of the study area.