Geographical analysis

Abstract

The stream that has always been a reliable source of drinking water is now carrying a lot of treated and untreated domestic, industrial, and agricultural effluents from Bangalore's western suburbs. Due to the ease with which it is accessible in periurban areas, this contaminated water is used in agriculture, which leads to a variety of environmental problems in food chain pollution by heavy metals, which could accumulate and bio accumulate in human health issues. Water samples from the Vrishabhavathi River that surrounds it are subjected to extensive physicochemical characteristics and toxic heavy metal analysis. Most sewage treatment plants are not intended to remove micropollutants like pesticides, medicines, and nano-sized metals, which are a major problem for a sustainable human and ecological system. Instead, they are made to remove organic matter and nutrients from municipal sewage water. Because of the untreated pollutants in STP (sewage treatment plant) effluents, there are still environmental dangers even after contaminants have been removed by wastewater treatment methods In order to assess the efficacy of the wastewater treatment process in reducing toxicity and to determine the concentration of pollutants that may be harmful in STP effluents, this study conducted aquatic toxicity studies of untreated effluents and treated effluents in the Vrishabhavathi River. It is seen that from the groundwater sample results, there is no contamination when compared to surface water.