Lake Water Quality Indexing To Identify Suitable Sites For Household Utility: A Case Study Jambhulwadi Lake;Pune(MS (original) (raw)
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Assessment of Water Quality for Determining the Pollution Status of a Famous Lake of North India
2016
Dal Lake has been under tremendous pressure and its pollution seems never ending. In this paper, an attempt has been made to describe the present pollution level in the lake environment with the use of water quality indices. Water quality index seems quite a rational tool in bringing a combination of various water quality parameter data into a single number describing the pollution level in a particular range usually from 0 to 100. Two water quality indices have been used, one is the Weighted Arithmetic Average method which is a specific water quality index used to describe the drinking water quality and the other one is the popular NSF (National Sanitation Foundation) method which describes the general water quality. According to this method, the values indicate that the quality of the water in the lake is of “medium” type. Both the methods indicate that Dal Lake is a dying heritage and immediate and effective restoration measures should be adopted to save this precious jewel other...
2013
The present study was intended to calculate Water Quality Index (WQI) of a rural freshwater body in Ghuma village, District Ahmedabad in order to ascertain the quality of water for public consumption, recreation and other purposes. This paper deals with the study on the influence of environmental parameters on the water quality of water body. There are several ways to assess the quality of water deemed fit for drinking, irrigation and industrial use. Water Quality Index, indicating the water quality in terms of index number, offers a useful presentation of overall quality of water for public or for any intended use as well as in the pollution abatement programmes and in water quality management. A number of parameters affect the usability of water for a particular purpose. In this study Water Quality Index was determined on the basis of various physico-chemical parameters.
A systematic study has been carried out to assess the Water Quality Index of Chandola Lake, Ahmedabad, Gujarat, India. Water samples from ten sampling sites were collected and analyzed for physico-chemical parameters (electrical conductivity, total dissolved solids, pH, dissolved oxygen, alkalinity, total hardness, calcium, magnesium, chloride, nitrate and biological oxygen demand). The study area experiences a seasonal climate and broadly divided into three seasons as monsoon (June to September), winter (October to January) and summer (March to May). The samples were collected and analyzed for one year from September 2013 to August 2014. Each parameter was compared with the standard desirable limit of that parameter in lake water as prescribed by different agencies. The analytical data of various physico-chemical parameters indicates that some parameters like total dissolved solids, pH, alkalinity, total hardness and calcium was beyond the permissible limit according to WHO and BIS standards for drinking purpose in the year. The WQI value indicates that water samples of summer and monsoon season were unsuitable for drinking.
Development of an Overall Water Quality Index (OWQI) for Surface Water in Indian Context
Current World Environment, 2015
A number of water quality indices based on classification criteria, sub-indices and aggregation function have been developed by the researchers for categorizing the water quality for different uses. In the present study, a general Overall Water Quality Index (OWQI) is developed to classify the surface water into five categories, viz. excellent, good, fair, poor and polluted. For this purpose, the concentration ranges have been defined on the basis of the Indian Standards (IS) and Central Pollution Control Board (CPCB) standards also taking into account other International standards of World Health Organization (WHO) and European Commission (EC). Sixteen parameters are selected based on social and environmental impact and weights are assigned on their relative importance to impact the quality of water. The proposed index improves understanding of water quality issues by integrating complex data and generates a score which describes the status of water quality. The proposed index will...
Development of a water quality index (WQI) for the Loktak Lake in India
The present work was carried out to assess a water quality index (WQI) of the Loktak Lake, an important wetland which has been under pressure due to the increasing anthropogenic activities. Physicochemical parameters like temperature (Tem), potential hydrogen (pH), electrical conductivity (EC), turbidity (T), dissolved oxygen (DO), total hardness (TH), calcium (Ca), chloride (Cl), fluoride (F), sulphate (SO2 4), magnesium (Mg), phosphate (PO3 4), sodium (Na), potassium (K), nitrite (NO2), nitrate (NO3), total dissolved solids (TDS), total carbon (TC), biochemical oxygen demand (BOD), and chemical oxygen demand (COD) were analyzed using standard procedures. The values obtained were compared with the guidelines for drinking purpose suggested by the World Health Organization and Bureau of Indian Standard. The result shows the higher concentration of nitrite in all the location which is beyond the permissible limit. Eleven parameters were selected to derive the WQI for the estimation of water potential for five sampling sites. A relative weight was assigned to each parameter range from 1.46 to 4.09 based on its importance. The WQI values range from 64 to 77 indicating that the Loktak Lake water is not fit for drinking, including both human and animals, even though the people living inside the Lake are using it for drinking purposes. The implementation of WQI is necessary for proper management of the Loktak Lake and it will be a very helpful tool for the public and decision makers to evaluate the water quality of the Loktak Lake for sustainable management.
2021
This study demonstrates and analyses spatio-temporal changes and trends of 15 water quality parameters that were arbitrated from the samples collected at 11 sampling locations during the water quality monitoring across the Dal Lake from September 2017 to August 2020. Further a revised WQI (named WQImin) was developed contingent on multiple regression modeling comprising six key parameters (NH4-N, DO, COD, WT, TUB and NO3-N) so as to ease the course of action and lessen the systematic costs of the water quality assessment. The results signify that the general mean WQI value 81.9 and seasonal average WQI values ranges from 79.44 to 84.55. The quality of water showed seasonal variance, with lowest values in summer, succeeded by autumn and winter, and highest in spring. Moreover, the suggested WQImin model contingent on the selected six critical parameters displayed execution in the evaluation of Dal Lake’s water quality with R2 = 0.99, RMSE value (5.48) and PE value of 6.34%. This mani...
EVALUATION OF WATER QUALITY INDEX FOR ASSESSMENT OF
The environmental quality is greatly focused on water because of its importance in maintaining the human health and health of the ecosystem. The Water Quality Index (WQI) is an arithmetic tool used to transform large water quality data into a single number which represents the water quality level for human consumption. In the present study (April 2012 to March 2013), surface water samples in summer, monsoon and winter seasons were collected at three sampling sites in the Budhi Gandak River near Khagaria for assessment of river water quality. The water quality variables analyzed for assessment of river water quality included temperature, pH, turbidity, total dissolved solids (TDS), conductivity, total hardness (TH), dissolved oxygen (DO ), total alkalinity (TA), phosphate (PO¯), nitrate (NO¯) and chloride (Cl¯). The results indicated that most of the physico-chemical parameters were within the WHO limits (1998) and BIS: 10500(2004-2005) for drinking water except turbidity values which exceeded (18.55- 58.37 NTU) the maximum permissible limit of Indian standards at all the three sites in all the three seasons (except site II value during winter). The seasonal water quality data showed the pH in the range of 6.9-7.3, DO in the range of 4.9-8.71 mg/L and total hardness in the range of 187.5-246.0 mg/L. A water quality index was calculated considering relative weights of 9 water quality parameters following the calculation method prescribed by Ramakrishnaiah et al., 2009 and Gebrehiwot et al., 2011. WQI were in the range of good category (63.45-87.35) in summer and winter seasons at each site and in the range of poor category in monsoon season almost at all the three sites.