Agricultural pollutants and creation of the critical areas in the range of water supply around Sabzevar

Pollutant sources of water, are agricultural, industrial and urban – rural pollutants. In order to identify chemical contamination of groundwater due to agricultural activities, the spatial distribution of agricultural pollutants around drinkable water area of Sabzevar City and their role in creating critical areas, should be studied. Results showed that regarding nitrogen pollution, Eastern Qhasabeh District with 358.5 tons has produced the higher pollution, mainly due to the establishment of industries and service units and are among the areas considered as critical region. Therefore highest pollution of various agricultural activities is resulted. Regarding to the findings the following recommendations are proposed: 1-Creating a management plan for water system twirl, 2-refining wastewater for agriculture, 3-reform and clean water in the existent stream,4-recognition of sabzevar water status.