Application of a composite water qaulity index to assess the health of water sources

Jayasuriya, N, Suresh, S, Shafiq, H and Bhuiyan, M 2014, 'Application of a composite water qaulity index to assess the health of water sources', in Proceedings of the 5th International Conference on Sustainable Built Environment (ICSBE 2014), Kandy, Sri Lanka, 12-15 December 2014, pp. 42-50.


Document type: Conference Paper
Collection: Conference Papers

Title Application of a composite water qaulity index to assess the health of water sources
Author(s) Jayasuriya, N
Suresh, S
Shafiq, H
Bhuiyan, M
Year 2014
Conference name ICSBE 2014
Conference location Kandy, Sri Lanka
Conference dates 12-15 December 2014
Proceedings title Proceedings of the 5th International Conference on Sustainable Built Environment (ICSBE 2014)
Publisher University of Peradeniya
Place of publication Peradeniya, Sri Lanka
Start page 42
End page 50
Total pages 9
Abstract The generic quality of naturally occurring water sources can be described using water quality parameters that describe the physical, chemical and biological conditions of the water. Each of these parameters reflects different characteristics of the water body and the overall health can be assessed by comparing threshold values detailed in water quality guidelines. The aim of the paper is to identify the suitability of a single composite Water Quality Index (WQI) to assess overall environmental health of a water body. The study uses 14 years of water quality data from four sites along the Dandenong creek in southeast Melbourne in Australia. The water quality parameters are available at monthly intervals. The WQI was calculated and the results from its application were used to identify the variation in water quality when water flows from pati forested upstream, rural catchments to urbanized downstream catchments. E.coli, Turbidity and Dissolve Oxygen were the most sensitive parameters in the composite WQI. Results from this preliminaty assessment could lead to more focused detailed investigation studies if ce1iain enviromnental receptors are shown to be at risk.
Subjects Water Resources Engineering
Water Quality Engineering
Keyword(s) Health of water sources
stormwater quality
trend lines
water quality index
ISBN 9789555891882
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