Krishnagiri District, Tamil Nadu, Groundwater Quality Status in relation to MCDM System Pollution

Abstract

The essence of life, water, is a fundamental natural resource. The availability and quality of groundwater have been impacted by India's growing urbanisation. The Krishnagiri groundwater has been reduced by 60%, according to the Central Ground Water Board, and additional research could result in salt water intrusion. In order to evaluate the quality of the groundwater in Krishnagiri City, this study was conducted. The appropriateness of groundwater for industrial, household, agricultural, and drinking needs depends in large part on its quality. Evaluation of the suitability of the district of Krishnagiri's northern and eastern groundwater for irrigation and drinking. In the study region, samples of groundwater were taken. By assessing physicochemical factors like pH, TDS, TH, sulphate, chloride, calcium, and magnesium, groundwater quality has been assessed. MCDM is used to evaluate the water quality, and the results show that it is generally suitable for irrigation in most models. The alternative in this method has been used by the Krishnagiri Taluk, Pochampalli Taluk, Uthangarai Taluk, Hosur Taluk, Denkanikottai Taluk, and Bargur Taluk. The evaluation parameters are pH, TDS, TH, Sulphate, Chloride, Calcium, and Magnesium. Six randomly chosen locations were chosen from the six mandals that make up Krishnagiri town, and 18 groundwater samples were taken and their physicochemical characteristics were examined. The algorithm for selecting priorities is created using the well-known ARAS decision-making process. Since Krishnagiri Taluk is ranked top, the district's water quality is the best in the region. Most of the water quality assessment parameters, with the exception of a few, revealed parameters that were within the acceptable standard values of the Bureau of Indian Standards (BIS). None of the metrics exceeded the BIS-recommended allowed levels for water quality assessment, with the exception of pH at one point in Zone 1. These factors determine whether groundwater is acceptable for irrigation and drinking.