Time series analysis of river water quality data from a tropical urban catchment

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Studies assessing long term changes of water quality have been recognized as a key tool for understanding ongoing processes in watersheds and for providing an essential background for evaluation of rapid changes within industrialized and populated urban areas. This study examines the trends of water quality parameters in the Pencala River in Kuala Lumpur from 1997 to 2009. The trend analysis was performed on thirteen physical and chemical parameters using the Mann-Kendall Seasonal test and the Sen’s Slope estimator. The statistical results indicated that most water quality parameters showed a downward trend for yearly average concentration. The Water Quality Index (WQI) for Pencala River was improved from Class V to Class IV, according to National Water Quality Standards for Malaysia. BOD, COD, NH3-N and SS showed decreasing trends during the study period. The improvements seen in river water quality appear to be the result of improved wastewater treatment at the study catchment.

Original languageEnglish
Title of host publicationWater Resources and Environment - Proceedings of the International Conference on Water Resources and Environment, WRE 2015
EditorsMiklas Scholz
PublisherCRC Press/Balkema
Pages327-331
Number of pages5
ISBN (Print)9781138029095
Publication statusPublished - 01 Jan 2016
EventInternational Conference on Water Resources and Environment, WRE 2015 - Beijing, China
Duration: 25 Jul 201528 Jul 2015

Other

OtherInternational Conference on Water Resources and Environment, WRE 2015
CountryChina
CityBeijing
Period25/07/1528/07/15

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All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Environmental Science (miscellaneous)

Cite this

Chow, M. F., Haris, H., & Mohd Sidek, L. (2016). Time series analysis of river water quality data from a tropical urban catchment. In M. Scholz (Ed.), Water Resources and Environment - Proceedings of the International Conference on Water Resources and Environment, WRE 2015 (pp. 327-331). CRC Press/Balkema.