Micro economics is a situation where there are few, large firms and any change in one firm's output or prices will effect the whole market.
1. Planting more trees. Trees could help in protecting a water source from inside the soil through its root, which could answer the problem in lack of clean water
2. Imposing higher taxation system for the companies that dump their waste into our water source, so the government could receive fund to recycle the water in becoming useful again.
3. Advocate people through campaigns to not spending water more than they needed everyday
It means free from the control of any foreign power and internally has a free government which is directly elected by the people and makes laws that govern the people.