1. Design Review 2Water Drop1 Team Water Drop The Taapu!

2. Design Review 2Water Drop2 Team Water Drop Adam French Saving the world one bike at a time Chris Bradford A Virgo Anshuman Bapna Hopelessly out of touch with rural India Eric Tsai Monomaniacal passion to sing “Hava Nageela”

3. Design Review 2Water Drop3 Team Water Drop Adam French Saving the world one bike at a time Chris Bradford A Virgo Anshuman Bapna Hopelessly out of touch with rural India Eric Tsai Monomaniacal passion to sing “Hava Nageela” RAMU! Our newest team member

4. Design Review 2Water Drop4 Ramu – the dollar-a-day farmer Lower caste farmer 2-acre plot growing beans and sorghum but nothing in dry season Supports a family of 9; save half of crop for consumption Get my info from radio or rare city visits Dream: grow tomatoes or eggplants in the dry season Problem: The well has dried up, and flood irrigation is expensive and inefficient. Drip irrigation is great, but requires a gravity tank.

5. Design Review 2Water Drop5 So what’s wrong with the Gravity Tank? Too expensive at Rs 600 ($12) Unnecessary valve Need elevated place Theft (Rs 600 is ½ month’s income!) The Need: A better way to get water from storage to drip-irrigation

6. Design Review 2Water Drop6 The Taapu!

7. Design Review 2Water Drop7 The Taapu!

8. Design Review 2Water Drop8 Value Benefits 270 L Storage Low-cost Easy Set-up Transportable Readily available materials * Irrigation * Disaster Relief

9. Design Review 2Water Drop9 Installation

10. Design Review 2Water Drop10 Maintenance Holes may form... But they can be easily patched!

11. Design Review 2Water Drop11 Ramu’s buying decision Cuts 60% off gravity tank price Cost of the micro-irrigation system reduced from Rs 950 to Rs 550! Rs 400 savings = 10 day’s income My child’s annual school fee The cost of seed/fertilizer for another season Drip-irrigation system for another 100 m 2 plot

12. Design Review 2Water Drop12 A Scalable Manufacturing Process Simple, scalable components –rope, flat sheet, PVC, bar, tube Flat sheet made watertight –Pinched between bar and PVC Low capital investment –Local assembly possible at low labor cost

13. Design Review 2Water Drop13 Watertight Seal Steel bar Slit PVC Pipe Bag material 1 2 3 4 5

14. Design Review 2Water Drop14 Viable Economics Manufacturing cost: $2.75 –Direct Materials: $2.50 –0.5 hours of labor: $.25 Retail price: $4.50 –~30% markup for both manufacturer and distributor Building 16 units per day with one employee would make $13 profit per day!

15. Design Review 2Water Drop15 Marketing and Distribution Primary audience: –$1/day farmers in semi-arid, monsoon, no groundwater availability. Reach via: –Drip irrigation system demonstrations (IDE) Movievans! –Demonstrations of Taapu by local manufacturers Distribution channels: –Local manufacturers –Local resellers

16. Design Review 2Water Drop16 Refinement Pilot TestsDevelop Local PartnersRollout Timeline for Expansion First step: Refinement of Design –Eliminate leaks, reduce costs Next: Test with Ramu and Friends –Tips for further refinement FebruaryFeb/March March -- ?

17. Design Review 2Water Drop17 Problems and Questions Is it durable? It’s not very attractive! How best to repair it? Does it take up too much space? Are there alternate uses? Can Ramu assemble for himself?

18. Design Review 2Water Drop18 Potential Refinements

19. Design Review 2Water Drop19 Expert Testimony Martin Fisher Technical Director, ApproTEC Cost Reduction is Key Must determine appropriate bag size for market - How often replenished? User perspectives of “quality” may vary

20. Design Review 2Water Drop20 Summary and Conclusions Current IDE Gravity Tank needs improvement A much cheaper, higher volume tank can be profitably manufactured All components are scalable, and bags could be manufactured or assembled locally A number of design problems remain to be solved

21. Design Review 2Water Drop21 Future Steps Prioritized Group Research Reinvigorating Ideation Refining Mission Statement Ideation Design Review Refined Mission Research