Statistical significance between inlet and outlet heavy metal of water and sediment for each season was assessed using Mann-Whitney nonparametric test (Siegel 1975). The Kruskal-Wallis nonparametric test (Siegel 1975) was used to compare the heavy metal concentrations in the macrophyte species in each season. The Mann-Whitney nonparametric test (Siegel 1975) was used to evaluate statistical significance for the heavy metal concentrations in each macrophyte species between dry and rainy season. A level of p