The spatial assessments of water supply quality from wells, springs, and surface bodies were performed during the dry rainy seasons in six municipalities eastern regions Michoacán (Central Mexico). Different physicochemical parameters used to determine supplies’ Water Quality Index (WQI); all communities presented good quality. analysis indicates that many within limits set by international sta...

This paper proposes an ensemble of support vector regression and complementary neural networks to predict the Water Quality Index (WQI) for Tha Chin River, Nakhonpathom, Thailand. The data set was collected during the year 2002-2007. Four parameters are used in the prediction which are dissolved oxygen, total solid, biological oxygen demand, and suspended solid. It is found that an ensemble of ...

The objectives of this study were to investigate the seasonal and spatial variations of heavy metal pollution in the overlying water and surface sediments of the Tiaozi River, a tributary of the Liao River, which is one of the seven major rivers and one of the most heavily-polluted rivers in China. Water and sediment samples were collected over four seasons, analyzed for heavy metals (Pb, Cu, N...

The aimed study assesses the water quality of Mardi River applying National Sanitation Foundation (NSF) America developed index called Water Quality Index (WQI). This index is one of effective way to inform about water quality trends to the public and the policy makers for water quality management. As Mardi River is primary source of consumption to Pokhara city and Mardi Watershed entities, the...

Online approaches for monitoring water quality can be an alternative aid to rapid decision-making in watershed management, especially reservoirs, given their vulnerability the process of eutrophication. In this study, a modified index (WQI) was developed using parameters that are easily measured with sensors, which would allow online reservoirs. The WQI based on WQICETESB and we used regression...

Contamination of industrial and municipal water supplies with arsenic (As), selenium (Se), and mercury (Hg) can occur from natural deposits, industrial discharge, runoff from mining, landfill and agricultural operations. Consumption of contaminated water can cause skin damage (As), kidney and nervous system damage (Hg) and numbness in the fingers and toes (Se).1 The U.S. Environmental Protectio...

Some previous works show that more than 60% of the information available on the Web is located in Deep Web database. Such information cannot be directly indexed by search engines.In this paper, a hybrid method, which is composed of a domain model and a block importance model is proposed to extract information in Deep Web.The domain model is used for classifying and identifying whether a form is...

Reservoirs are vital water sources that contribute significantly to local ecological and environmental balance, particularly in semi-arid regions. An evaluation of the drinking quality index (WQI) has been conducted using ten parameters like electrical conductivity (EC), chloride (Cl-), pH, total hardness (TH), alkalinity (TA), phosphate (PO43-), dissolved oxygen (DO), nitrate (NO3-), solids (T...

Abstract Rapid human pressure in semi-urban and urban areas along with increasing industrial activities has resulted release of untreated sewage other forms pollutants into major rivers globally including the Ganga. In this study, nine sites represented by 59 stations lower stretch River Ganga were monitored seasonally to understand effect monsoonal precipitation on environmental variables Wate...

Abstract The study aims to improve the quality of wastewater in Sulaymaniyah city, Iraq, which has been facing drought problems, by using sedimentation, dilution (1:1), and biochar filtration. It provides an alternative source water for agriculture, addressing shortage problem region. irrigation is evaluated based on Water Quality Index (WQI) a fuzzy inference system, mathematical tool that con...