State four steps to be taken to prevent water pollution.

Steps to be taken to prevent water pollution :

1. The polluted water from industries should be passed through effluent treatment plants so that all the harmful chemicals present are removed from it.
2. Sources of underground water, like wells, should be covered properly to keep them clean.
3. Washing and cleaning of utensils and clothes should not be done near sources of water.
4. Bathing and cleaning of animals in or near sources of water like rivers, lakes and ponds should not be done.