Various methods for calculating the water quality index

Authors

  • Valentina Andreea Călmuc “Dunarea de Jos“ University of Galati
  • Mădălina Călmuc “Dunarea de Jos“ University of Galati
  • Maria Cătălina Țopa “Dunarea de Jos“ University of Galati
  • Mihaela Timofti “Dunarea de Jos“ University of Galati
  • Cătălina Iticescu “Dunarea de Jos“ University of Galati
  • Lucian Puiu Georgescu “Dunarea de Jos“ University of Galati

DOI:

https://doi.org/10.35219/ann-ugal-math-phys-mec.2018.2.09

Keywords:

Water Quality Index, NFS-WQI, OWQI, WAWQI, CCME-WQI, Danube

Abstract

At present, the most commonly used method to evaluate the quality of a water stream is the application of the Water Quality Index, which may be determined by using different methods. The main purpose of this study is to describe four methods for calculating the Water Quality Index with their advantages and disadvantages: NFS-WQI (National Sanitation Foundation-Water Quality Index), OWQI (Oregon Water Quality Index), WAWQI (Weighted Arithmetic Water Quality Index) and CCME-WQI (Canadian Council of Ministers of the Environment -Water Quality Index). Choosing one of the four methods mentioned above should be based on the study purpose and on the nature of the water stream. These indices have already been used to determine the quality of the Danube water in the all the riverine states. Moreover, the present research reveals that two methods are proved to be useful in determining the Danube water quality, namely: WAWQI (Weighted Arithmetic Water Quality Index) and CCME-WQI (Canadian Council of Ministers of the Environment -Water Quality Index). 

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Author Biographies

  • Valentina Andreea Călmuc, “Dunarea de Jos“ University of Galati

    Dunarea de Jos“ University of Galati, European Center of Excellence for the Environment, Faculty of Sciences and Environment, 111 Domneasca Street, 800201, Galati, Romania

  • Mădălina Călmuc, “Dunarea de Jos“ University of Galati

    Dunarea de Jos“ University of Galati, European Center of Excellence for the Environment, Faculty of Sciences and Environment, 111 Domneasca Street, 800201, Galati, Romania

  • Maria Cătălina Țopa, “Dunarea de Jos“ University of Galati

    Dunarea de Jos“ University of Galati, European Center of Excellence for the Environment, Faculty of Sciences and Environment, 111 Domneasca Street, 800201, Galati, Romania

  • Mihaela Timofti, “Dunarea de Jos“ University of Galati

    Dunarea de Jos“ University of Galati, European Center of Excellence for the Environment, Faculty of Sciences and Environment, 111 Domneasca Street, 800201, Galati, Romania

  • Cătălina Iticescu, “Dunarea de Jos“ University of Galati

    Dunarea de Jos“ University of Galati, European Center of Excellence for the Environment, Faculty of Sciences and Environment, 111 Domneasca Street, 800201, Galati, Romania

  • Lucian Puiu Georgescu, “Dunarea de Jos“ University of Galati

    Dunarea de Jos“ University of Galati, European Center of Excellence for the Environment, Faculty of Sciences and Environment, 111 Domneasca Street, 800201, Galati, Romania

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Published

2018-11-21

Issue

Vol. 41 No. 2 (2018)

Section

Articles

How to Cite

“Various methods for calculating the water quality index” (2018) Analele Universității ”Dunărea de Jos” din Galați. Fascicula II, Matematică, fizică, mecanică teoretică / Annals of the ”Dunarea de Jos” University of Galati. Fascicle II, Mathematics, Physics, Theoretical Mechanics, 41(2), pp. 171–178. doi:10.35219/ann-ugal-math-phys-mec.2018.2.09.

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