Rainwater harvesting is a technique used to collect and store rainwater from rooftops, land surfaces, and other catchment areas for human use. It is a decentralized system that can be installed in homes, institutions, and communities to accumulate rainwater for on-site reuse. Some benefits of rainwater harvesting include multiple uses like domestic water consumption, toilet flushing, and groundwater recharge while reducing urban runoff and flooding. It also has low maintenance needs.

1. Water Conservation
Techniques

2. What is water conservation?

3. Why Conserve Water?

4. Typical Household Water Use

5. Rainwater Harvesting for Consumption
 Technology used for
collecting and storing
rainwater for human
use from rooftops, land
surfaces
 Decentralised system –
Installed in houses,
Institutions, community
 Accumulation & deposition
of rainwater for reuse on-
site

6. How we can Harvest Rainwater
 Surface Runoff Harvesting-

7.  Roof Top Harvesting
How we can Harvest Rainwater

8. Flowchart of Rainwater Harvesting
Catchment Area (Roof Terrace)
Rainwater collection
Collection through Storm Water Pipes
Passing Through Filter Bed (Sand & Brick
Bats)
Recharge Shaft

9. Benefit of Rainwater Harvesting
 Has multiple uses-
• Domestic consumption
• toilet flushing, sprinkling,
• ground water recharge,
• reduces urban storm runoff and associate flooding and erosion
 Low maintenance