scholarly journals Physico-Chemical Analysis of Drinking Water Quality in Vicinity of KanigiriMandal Area, Prakasam District, Andhra Pradesh, India.

Author(s):  
A. Samba Shiva Rao
2016 ◽  
Vol 78 (11) ◽  
Author(s):  
Manutha Appa Rwoo ◽  
Hafizan Juahir ◽  
Nor Malisa Roslan ◽  
Mohd Ekhwan Toriman ◽  
Azizah Endut ◽  
...  

This case study characterizes the drinking water quality by using the multivariate technique. The spatial variation of the physico-chemical and heavy metals parameters toxicity with the drinking water quality based on 28 water treatment plants in Selangor, Malaysia from 2009 to 2012 was evaluated. The objectives of this study are to analyze the physio-chemical activities and heavy metals activities in the collected drinking water samples from the treatment plants, and to detect the source of pollution for the most revealing parameters. The discriminant analysis (DA) and the principal component analysis (PCA) are the chemometric techniques used to investigate the spatial variation of the most significant physico-chemical and heavy metal parameters of the drinking water samples. The classification matrix accuracy for standard mode of DA, forward stepwise and backward stepwise for the physico-chemical and heavy metal parameters are excellent. PCA highlighted 13 significant parameters out of 18 physico-chemical water quality parameters and 14 significant parameters out of 16 heavy metal parameters. PCA was carried out to identify the origin and source of pollution of each water quality parameters. For that reason, this study proves that chemometric method is the principle way to explain the characteristic of the drinking water quality.


Author(s):  
Pankaj Malkani ◽  
Atish Sagar ◽  
Asha K. R. ◽  
Prashant Singh ◽  
Yogendra Kumar

In developing countries, one of the main concerns is contaminated drinking water. The rise in demands and development pressure is also changing the characteristics of water resources. The freshwater sources are increasingly being depleted as surface water resources have become too polluted for human consumption. To address this issue, water samples were collected from industrial clusters in Kashipur town and from the Kosi River. Industrial effluents were obtained from six locations and samples from twelve sites were drawn from the groundwater. Water supplies have been sampled from boreholes, open wells, rivers and some piped waters throughout the town of this area. The specimens are examined for their concentration of physico-chemical and heavy metals to detect pollution issues and recommend acceptable solutions. Results of the assessment confirmed that in the studied area there was the presence of various health and aesthetic parameters of concern. Apart from Kosi bank and Cheema drain, most of the effluents are acceptable for discharge into the water body. Most of the groundwater surrounding these three industries was not suitable as groundwater samples for drinking purposes at Dhouri pratha 1, Glycol gate no.1, Artesian well sugarcane center, petrol pump, and Parmanandpur-2. In addition, factors of environmental significance, such as turbidity, iron, and manganese, have a negative impact on many groundwater sources. Using alternative sources, improving water supply structures and treating water can be solutions to improve drinking water quality in this area. 


2019 ◽  
Vol 8 (3) ◽  
pp. 1-21
Author(s):  
Prasidha Raj Neupane ◽  
Iswor Bajracharya ◽  
Meera Prajapati ◽  
Hishila Sujakhu ◽  
Pramod Awal

Bottled water is generally considered safe for drinking. However, several studies have reported the substandard quality of bottled water. Physico-chemical assessment of ten different brands of bottled water distributed in Bhaktapur Municipality was carried out from January 2018 to March 2018. In total, one hundred bottled water samples consisting of ten different brands were collected randomly from various retail outlets. Eight selected physico-chemical and microbiological parameters were analysed following standard methods, and the results were compared with the Nepal Drinking Water Quality Standard (NDWQS) (2005). Out of one hundred samples, sixty-nine samples did not comply with the standard pH limit. Other physico-chemical parameters were found to comply with the standard though variations were observed in the concentrations among different brands. Microbial contamination was not found in any brands of the bottled water samples considered in this study. However, it is necessary to examine other contaminants such as heavy metals, minerals, and chemicals to know the overall quality of water. Moreover, the regulatory bodies are required to strictly monitor water processing companies for the maintenance of the quality of bottled water.


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