Abstract
The current study deals with the water quality data available on the Pune Municipal Corporation (PMC) Open Data Portal. The readings of water quality parameters are collected on every Monday from March 2016 to March 2017 at different locations in Pune. The data consists of observations at twenty one locations and on thirteen water quality parameters like temperature of water, pH level, Biochemical and Chemical Oxygen Demand, Dissolved Oxygen etc.The main purpose of the analysis is comparing the water quality at different locations and identifying the most polluted location using different statistical tools. Techniques such as Principal component analysis, Factor analysis, Multivariate Analysis of Variance, Cluster analysis, Jonckheere’s trend test are used for this analysis. We check if seasonal variation (monsoon and non-monsoon) affects the water quality. We come up with two main factors, viz. oxygen level and salt content in water to summarize the conclusions based on initially recorded 13 parameters. Water quality of Khadakwasla Reservoir is the best among all the locations whereas Nallahs have poor quality of water. Dissolved oxygen is high in the lakes and Khadakwasla Reservoir, but its levels are decreasing with time. Water quality at different locations is not the same and pollution level is maximum in summer and minimum during the monsoon.
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