Regard @donkeypong, your explanation is very complete. Such problems are not just happening in your country. In my country also experienced a similar thing. Especially the areas of Java and Nusa Tenggara. Water shortages or droughts occur in a number of regions in Indonesia. All of that is because the forest is cleared. So that the trees that had functioned to store water and absorb the pollution are no longer there. Even in an area also made mines such as coal mines. Thus causing aridity. And there was a problem as you described above. Hopefully there fore the best solution to solve this problem, both in your country and in my country that is Indonesia. Thank you for sharing. My best regards @willyanah