Taking the appropiate measures immediately would be a wise decision. Together, with the people who also live in this polluted country, head to the government, and voice your complaint on the pollution in your country, and enforce them to take specific measures. If can, spreading awareness in the harms of pollution among the people can also be useful. So, spread the word about pollution, so that the particular poluted-place can be a place of better living.
Hope it helps ✌️