Speculations and Analysis on the Changes in Water Quality of Ahar River and its Impacts on Human Health

The property of the surface materials in basins and environmental changes are among the important factors which can affect the quality of water. Human manipulation of slopes and industrialization are other factors that divert pollution into water and cause poor water quality. Injection of solid materials into water resources and increasing the ions viscosity are among the important reasons which decrease the quality of water. This might affect the human health and threat the food security directly or indirectly. Ahar River, as the main river at western slope of Sabalan mt., plays a crucial role in the irrigation of the surrounding fields and providing water for urban settlements and villages. In recent years the discharge patterns and quality of water in Ahar River have changed. This paper has studied the changes of water quality in Ahar River by utilizing TDS, SO4, Na index and Man-kendal method in long periods predicting trends of change till 1400. The results showed that there were increased TDS, SO4, and Na in the study period. This pattern is very dangerous and can be considered as a threat to the human health. The findings showed that the TDS was very high, and the high amount of solid material indicated pollution so the water consumption of the Ahar River can be a potential threat to the people who use it.