In the present study, analyses were based on the concentration values of dioxin which were measured near the observations of Bali-incinerator and Linkou-power plant. Three different environmental media were used to detect that which one is the pollution source. We used the permutation test and the test of homogeneity of proportions to discuss it. We can establish the statistical model to discuss the concentrations of three media. Therefore, then using WinBUGS software by the posterior distributions of the Bayesian spatial model to obtain the unknown concentration in unknown observations. However, our information is limited. If we can add more determined factors, we believe that the results could be more accurate.