A data matrix was then constructed in Microsoft Excel spreadsheet (Microsoft Corporation) which comprised of all isolated bacteria and their number of presence in each sampling time, and all water quality measurement data. For better understanding of the results, all four sampling sites along the Terengganu River were combined and their mean ± SD data were used for further analyses. The data matrix was processed for analyses and prepared separately each for Pedu Lake, Kenyir Lake and Terengganu River.