This article discusses the pollution prices in a general equilibrium model. In a general equilibrium model in which several types of pollution are produced by a large number of productive units or firms, which also produce ordinary economic goods, the total amount of each type of pollution in the environment is simply the sum of the outputs from the firms. The total pollution levels are public bads, which, along with ordinary economic goods, enter into the utility functions of every individual, but have no effect on firms. Researchers considered the possibility that pollution affects production functions, and that the pollution which causes damage is actually synthesized by chemical processes in the environment, using effluents from firms as raw materials. In the absence of any controls on pollutant outputs, researchers assumed a competitive general equilibrium is established, in which pollution levels are considered too high. It is desired to reduce these levels, using economic instruments, i.e., taxes and subsidies.