A pdf version of this document may be downloaded from the gemswater. Chapter 1 an introduction to water quality this chapter was prepared by m. Water quality index wqi is valuable and unique rating to depict the overall water quality status in a single term that is helpful for the selection of appropriate treatment technique to meet the concerned issues. Characterisation of water bodies water bodies can be fully characterised by the three major components. Application of water pollution index towards 5 sampling sites selected by location map consideration denotes good water quality status with water pollution index. Best states for air and water quality us news best states. River water quality preliminary rapid assessment using pollution. The central pollution control board, in one of its report has placed the kolong river among 275 most polluted rivers of india. Evaluation of water quality index for drinking water.
Application of the water pollution index in the assessment of the. It can be used in trend analyses, graphical displays, and in tabular presentations. Water quality assessment can be defined as the evaluation of the physical, chemical and biological nature of water in relation to natural quality, human effects and intended uses. Water quality index wqi can also be used to aggregate data on water quality parameters at different times and in different places and to translate this information into a single value defining the period of time and spatial unit involved 17. Thus, this study is conducted to analyze the seasonal water quality status of the kolong river in terms of water quality index wqi. Drinking water quality index water resources management.
National sanitation foundation water quality index nsfwqi is used to determine the level of water quality, based on 9 parameters such as. Pdf application of water pollution index for assessment of tigris. The figures and diagrams were created by kelly hodgson. Water pollution is one of the biggest issues facing india right now. Freshwater ecosystems such as lakes, reservoirs and rivers. The water quality index can be a good tool for presenting water quality data. Ample degree of freshwater is eminent for biological needs are a. A water quality index wqi is a means by which water quality data is summarized for reporting to the public in a. The quality of the air we breathe and the water we drink are critical aspects of leading a healthy, productive life.
Water quality index methodology city and county of denver. The water pollution index wpi overcomes this problem by providing a single assessment. By testing water over a period of time, the changes in the quality of the water can be seen. Global citizens view climate change as the worlds biggest threat, and the head. Pratis index of pollution, bhargavas index, oregon wqi, dinius index, ccme wqi, nsf wqi and the. Pdf water quality indices important tools for water quality. Water quality indices wqis and water pollution indices wpis reduce.
Water pollution index of batujai reservoir, central lombok regency. Global drinking water quality index authorship the main authors of this report are carrie rickwood and genevieve m. Water quality status of ciambulawung river, banten. As shown on the graph, do concentrations in the red river vary from highs of 15 mgl in the winter water. Pdf water quality is a significant criterion in matching water demand and supply. The clean water act requires epa to develop criteria for ambient water quality that accurately reflect the latest scientific knowledge on the impacts of pollutants on human health and the environment. A complete assessment of water quality is based on appropriate monitoring of these components. The assessment of water quality was made using the water quality index wqi of. Water quality tests will give information about the health of the waterway. As may be evident, untreated sewage is the biggest source of such form of pollution in india.
Water quality assessment in terms of water quality index. Water is a valuable resource and it is highly essential for the survival of mankind. Comparative assessment of various water quality indices mdpi. Water pollution along with drought, inefficiency, and an exploding populationhas contributed to a freshwater crisis, threatening the sources we rely on for drinking water and other critical. Pdf physical and chemical parameters and the concentrations of cd, cr, cu, ni, pb and zn were investigated for water quality assessment of tigris. However, wqi depicts the composite influence of different water quality parameters and communicates water quality information to the public and legislative decision makers. Summary of water quality indicatorssurface waters page 2 around 9 mgl. Global drinking water quality index development and sensitivity analysis. Water quality index is a mathematical mechanism for summarizing the water quality data into simple terms e.
The major causes of water pollution include sewage and other oxygendemanding wastes. Application of water quality index for assessment of dokan. A pdf version of this document may be downloaded from the gems water. Indices of water quality and metal pollution of nile river. It is an excellent format for sum marizing overall water quality conditions over space and time. Ddphe has developed a water quality index wqi with the objective of turning. Global drinking water quality index the united nations. Water quality status of ciambulawung river, banten province.
1401 1386 824 1614 1486 1632 531 1085 1500 76 290 902 411 332 696 744 322 184 602 1335 1408 1565 1315 142 1070 759 719 1381 851 508 538 775 539 1492