To reduce the use of water by using it more than two times by reusing and recycling it. To meet the water requirements, make use of rainwater harvesting. Before releasing wastewater and industrial effluents in river and ponds, treat them and this can be done in three phases which are – Primary treatment is given through mechanical means such as screening, grinding, flocculation and sedimentation. The biological process is the secondary treatment given to the hot water and industrial effluents. The biological, chemical and physical process is the tertiary treatment like the recycling of wastewater. Groundwater reserves should be removed from those places which pose as a threat to the groundwater resources. Smoke stacks in the factories could be fitted with electrostatic precipitators, fabric filters, scrubbers, inertial separators. This will help to reduce the particulate matter in the air. By using oil or gas rather than coal, smoke could be reduced to a certain extent.