## Weighted arithmetic water quality index method

Weighted arithmetic Water Quality Index (WQI) method The weighted arithmetic WQI method [ 16, 17 ] was applied to assess water suitability for drinking purposes. In this method, water quality rating scale, relative weight, and overall WQI were calculated by the following formulae: q i =  (C i / S i)  × 100

Nitrates(Spectrophotometric method) tests were performed. 3.3 Calculation of Weighted Arithmetic WQI. Weighted arithmetic water quality index method. calculated by using Weighted Arithmetic Index method as explained by [29]. According to this method, different water quality parameters are multiplied by a  25 May 2012 The calculation of Water Quality Index (WQI) was carried out using software on the world sanitation website weighted arithmetic index method  WATER QUALITY INDEX IN AND AROUND BADVEL TALUKA. D. Janardhana Rao et This was derived by weightage arithmetic method. It is one of the most  Abstract: The present work is aimed at assessing the water quality index (WQI) Methodology. Groundwater samples were Arithmetic mean, SD-Standard deviation, CV-Coefficient variation, Q1-Median of the lower half, Q3-. Median of Calculated relative weight (Wi) values of each parameter are also given in Table 3. Key Words: Deepor Beel, Assam, Water Quality Index,. Physico-Chemical Parameters, Weighted Arithmetic Index. Method. 1. INTRODUCTION. Water quality  4 Apr 2012 Water-Quality Indices Based on Fuzzy Logic and Other Methods of Artificial Intelligence. 6.1 Introduction. 6.2 Fuzzy Inference. 6.3 A Primer on Fuzzy Arithmetic 6.10 Use of Ordered Weighted Averaging (OWA) Operators for

## Nitrates(Spectrophotometric method) tests were performed. 3.3 Calculation of Weighted Arithmetic WQI. Weighted arithmetic water quality index method.

Wi = weight associated with ith water quality parameter; n = number of water quality Weighted arithmetic water quality index method classified the water quality  8 Jan 2018 The indexing method is referred to as the Water Quality Index of the The River Ganga Index, like DOE-WQI, is a weighted arithmetic index. TDS etc., were carried out – as per the methods described in APHA. (1992). All the the calculation of water Quality index (WQI) . The calculation of WQI was made using weighed Arithmetic index Where wn = unit weight for nth parameter. 4. Weighted Arithmetic Water Quality Index. Method. III. MATERIALS AND METHODS. A. Selection Of Parameters: For a drinking water quality analysis, first

### In this study are discussed various water quality indices used to assess the quality Weighted Arithmetic Water Quality Index Method classifies the water quality

2) Weighted Arithmetic Water Quality Index Method to. Assess Suitability for Drinking Purpose [3]. . II. MATERIALS AND METHODS. Preliminary survey is carried  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

### Nitrates(Spectrophotometric method) tests were performed. 3.3 Calculation of Weighted Arithmetic WQI. Weighted arithmetic water quality index method.

In current study, Water Quality Index (WQI) was calculated by using the Weighted Arithmetic Index method as described by. In this model, different water quality components are multiplied by a weighting factor and are then aggregated using simple arithmetic mean. The first step in calculation of WQI following ‘weighted arithmetic index’ method involves the estimation of ‘unit weight’ assigned to each physico-chemical parameter considered for the calculation. By assigning unit-weights, all the concerned parameters of different units and dimensions are transformed to a common scale. Weighted arithmetic water quality index method classified the water quality according to the degree of purity by using the most commonly measured water quality variables. The method has been widely used by the various scientists [ 44 , 45 , 46 , 47 ] and the calculation of WQI was made [ 48 ] by using the following equation: In this study, the WQI, which is calculated using the weighted arithmetic index method [21] is used to determine the effect of waste dumping on the immediate ground and surface water- bodies to the dumpsite, as it is deemed the most appropriate, based on the prevailing conditions.

## As per Weighted Arithmetic method, water quality index is between 91.08 and 94.59 so the water is of poor quality. Hence water from these station points should be avoided for drinking purpose and can used for other purposes like irrigation.

In this study, the WQI, which is calculated using the weighted arithmetic index method [21] is used to determine the effect of waste dumping on the immediate ground and surface water- bodies to the dumpsite, as it is deemed the most appropriate, based on the prevailing conditions.

Furthermore, all indices currently used are restricted in their applicability and scope, because each author adopted different indicators, weights and sub- indices (  23 Jun 2018 Key Words: Assam, Kolongriver, Nagaon, Water Quality Index, Physico- Chemical Parameters, Weighted. Arithmetic Index Method.