1. The PlayPump COST: $14,000 World Bank Development Marketplace Award Winner, 2000
Description
The PlayPump utilizes a modular play wheel mechanism to simultaneously increase access to clean water, provide playground equipment for children, and improve hygiene and sanitation by social and public health messaging.
Main Features
Cost includes equipment, installation, water quality
testing, 10 years of maintenance and community liaison!
Offers a large, 2,500 litre storage tank
Stores water 7 metres above ground for distribution
Easy to install and to use
Low operation and maintenance costs
Adapts to below-ground assembly of any deep-well pump
Recycles unused water
Billboards generate revenue for pump maintenance
Reserves 2 of its 4 billboards for educational messaging
How does the PlayPump work?
Children spin on the merry-go-round
A valve pump converts rotational to vertical movement and draws clean water up from the borehole
Into a 2,500 litre tank
Standing 7 metres above ground
A simple tap allows for drawing of water
Excess water is diverted from the storage tank back down the borehole
The water tank provides a rare opportunity to advertise in outlaying communities, with all four sides leased as billboards
Technical Data
Well Type
Borehole (≥ 100 mm ⌀)
Space required
Circular, minimum 7 m (⌀)
Construction
Modular play wheel mechanism
Play wheel (⌀)
3,340 mm
Cylinder
Direct action reciprocating cylinder of any deep-well hand pump
Capacity
15 – 20 children
Discharge
at 10 m head
at 15 m head
at 20 m head
at 30 m head
With a 75 watt input, approximately:
1.6 m3/hour
1.3 m3/hour
1.1 m3/hour
0.9 m3/hour
Pumping Lift
>100 metres
Operating depth
25 – 100 metres
Ideal speed
16 – 20 rotations per minute
Output
1,400 litres per hour , at 16 rotations per minute
Operating mechanism
Manually operated play wheel
Connecting rods
Galvanized steel pipe, 30° mitre
Weight
900 kilograms
Riser pipes
User-defined
Potential Application
School water supply, community water supply in a rural area
Population served
Approximately 300 people
(30 – 50 households)
References
1. Span Pumps Pvt Ltd. Hand Pumps. Span Pumps Private Limited: . [Online] Span Pumps Pvt Ltd., [Cited: 04 29, 2010.]
2. Water for People. How Playpumps Works. Water for People: The Current of Change. [Online] Water for People. [Cited: 04 29, 2010.]
3. The PlayPump Service Project. Facts About the PlayPump. Welcome to the PlayPump Service Project: Together We Can Make a Difference. [Online] The PlayPump Service Project. [Cited: 04 29, 2010.] . 
Please note: Some technical specifications may have been modified for this exercise