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Evaluation of groundwater quality by adopting a multivariate statistical approach and indexing of water quality in Sagar Island, West Bengal, India
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Journal Article
Evaluation of groundwater quality by adopting a multivariate statistical approach and indexing of water quality in Sagar Island, West Bengal, India
2024
Overview
In the vicinity of the coast, predominantly groundwater is the sole reliable resource for potable purposes as the surface water sources are highly saline and unfit for human consumption. However, the groundwater in Sagar Island is highly vulnerable to saltwater intrusion. The majority of drinking water comes from government-owned hand pump-equipped tube wells. But during the summer season, many of these tube wells yield significantly less water. Hence, in the current scenario, water quality assessment has become important to the quantity available. Total of 31 samples of deep tube wells (groundwater) are collected at variegated locations during pre-monsoon season throughout Sagar, and then, the physical and chemical quality parameters of these water samples are analysed. Furthermore, a multivariate statistical technique is executed with the aid of the SPSS program. The hydro-chemical parameters that are taken into account for the quality analysis are pH, salinity, electrical conductivity (EC), total dissolved solids (TDS), total hardness, aluminium, arsenic, bi-carbonate, cadmium, iron, chloride, copper, chromium, cobalt, lead, magnesium, manganese, nickel, potassium, sulphate, zinc, and sodium. Then, the analysed data evaluates the water quality index (WQI). Five components are identified through the principal component analysis (PCA) technique, and 82.642% total variance is found. The outcomes of the quality assessment study illustrate that about 54.84% of collected samples come in the “excellent” water quality class when calculated by the “weighted arithmetic WQI method,” and 90.32% of collected groundwater samples come in the “good” water quality class when computed using the “modified weighted arithmetic WQI method.” This study helps for the interpretation of WQI to assess groundwater quality.
Publisher
Springer International Publishing,Springer Nature B.V
Subject
/ Aluminum
/ Arsenic
/ Atmospheric Protection/Air Quality Control/Air Pollution
/ Cadmium
/ Chromium
/ class
/ coasts
/ Cobalt
/ copper
/ Earth and Environmental Science
/ Ecology
/ Environmental Monitoring - methods
/ Geographic information systems
/ Humans
/ India
/ iron
/ lead
/ Monitoring/Environmental Analysis
/ Monsoons
/ Nickel
/ principal component analysis
/ Principal components analysis
/ Salinity
/ Sodium
/ Sulfates
/ summer
/ variance
/ Water Pollutants, Chemical - analysis
/ Wells
/ Zinc
