Water quality evaluation in term of WQI river tungabhadra, Karnataka, India.

Abstract

The study reports the Weighted Arithmetic Water Quality Index (WQIa) value obtained for River Tungabhadra, a major tributary of Krishna River basin. A WQIa delivers a unique rating that gives whole water quality at a specific stretch and period depending upon some water quality constraints. The principle point of a WQIa is to give complex water quality insights into data that is clear and useable by the community. Some of most critical water quality parameters such as pH, Total dissolved solids (TDS), Total alkalinity, dissolved oxygen (DO), Biochemical oxygen demand (BOD), Total hardness (TH), calcium (Ca), magnesium (Mg), and electrical conductivity (EC) were Used for evaluating the WQIa. The WQIa esteems for the Tungabhadra River oscillate from 40 to 156. The estimations of WQIa exhibited that the stream water was free of any impurities at the examining sites aside from 2-3 months where its qualities were under good condtion. On every occasion there are anthropogenic influence viz industrial effluent, agricultural runoff and domestic sewage which is directly discharge into stream water gets contaminated to some level and hence of WQI declines. It is opinioned that WQIa can be used as a device in relating the water-quality of different sources. It delivers the community a over-all awareness of the thinkable glitches with water in a specific stretch. The WQI are among the best approaches to convey the data on water-quality pattern to the public community or to the water quality policy-makers and which is help full to drive suitable mitigative measure.