A Study on the Impact of Industrial and Urban Development in Bongaigaon Town, Assam Based on Water Quality Index of the Tunia River

摘要

The water quality of the Tunia river is being gradually deteriorated due to adverse impact of industrial and urban development in the Bongaigaon town in the lower Assam region. Various industrial and commercial units, such as refinery, tea, coke, hotel and restaurant, hospital and nursing homes, automobile repairing and service centers alongwith other tertiary units discharges their treated and untreated effluents into the Tunia river which is finally debouch into the mighty river Brahmaputra through the Champamati river. The river also receives wastewater from the Bongaigaon town and railway colony area alongwith sewages from the New Bongaigaon Railway Junction. The water quality is evaluated on basis of the National Sanitation Foundation Water Quality Index (NSFWQI). The index value shows the impact of industrial and urban developments which are directly affecting the physico-chemical and bacteriological quality of river water and subsequently, altering the whole river eco system.