Environmental Monitoring and Assessment

, Volume 33, Issue 1, pp 33–42 | Cite as

Water quality index applied to rivers in the Vistula river basin in Poland

  • Jan Dojlido
  • Janusz Raniszewski
  • Jolanta Woyciechowska


A new method of a water quality index has been proposed. The unit indices were determined from the values of individual parameters using continuous functions. The base for such functions were the four water quality classes used in Poland. The summarized WQI is the square root of the harmonic mean of squares of unit indices. Using this mean we have eliminated the use of weights of parameters. Parameters are divided into basic parameters (7) and other additional parameters (19). The additional parameter is considered only if its unit index is lower than WQI from basic parameters. For many measurements at one point the guaranteed WQI has been calculated. The points of WQI were connected and the curves of WQI along the river were obtained.

A method of WQI calculating and preparation of WQI curves has been shown using as an example the Pilica river in Poland. The WQI was then calculated for 31 rivers in the Vistula river basin by measuring points.


Water Quality River Basin Continuous Function Environmental Management Quality Index 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Jan Dojlido
    • 1
  • Janusz Raniszewski
    • 1
  • Jolanta Woyciechowska
    • 1
  1. 1.Institute of Meteorology and Water ManagementWarsawPoland

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