Water

1. Drainage system

2. Irrigation system

3. Dehumidifier

4. Improving efficiency of already made designs (e.g-Groundwater pumps)

4.1. Moisture readers for farmland to control soil moisture, preventing over watering crops

4.1.1. Water meter

4.2. Reducing energy usage

5. Improving drainage systems

5.1. Pipe work

5.1.1. Increasing water flow

5.1.2. Valves

6. Collecting rainwater

7. Recycling dirty water

8. Water filtration

8.1. Ceramic filter

8.1.1. Reverse Osmosis

8.1.1.1. Alkaline/Water Ionisers

8.1.1.1.1. UV Filter

9. Storage of water

9.1. Tank

10. Wind turbines