In many countries throughout the world, there is a lack of fresh water available to a large part of the human population. As they can take only what they can physically carry, they have to make a journey several times throughout the day to there only source of water. The water they carry to their homes is used sparingly for cooking and drinking. Water used for bathing, washing clothes or pots and pans would require yet another trip to the water source. If there is another water source closer that can be used for bathing and washing, it is used regardless of how contaminated the water may be. This exposes the people, including small children, to many diseases. This is because these sources of water are not being protected from the elements and sediments around the water.

The average African does not have a clean glass of water in his or her life.

Infant mortality rates could be cut in half with global access to clean water and sanitation. The daily death count from unclean water is placed at 30,000. Two billion people lack safe water.


The SolarPedalflo Community Water Supply System is able to deliver treated potable water to virtually any location or doorstep in a rural community on a continuous basis.

MWI’s experience in hand pump production, along with intensive interaction with rural communities, led our engineers to the realization that existing hand pump technology would never allow communities to solve their water problem. Much good has been accomplished through public and private organizations’ attempts to help rural areas meet minimum per capita water requirements. However, the old methods of water collection/distribution still prevail and continue to promote disease and lower the quality of life.

The SolarPedalflo can discharge over 20 liters per minute (5 GPM) with an average 40 meters of head. Therefore, on a typical day with 8 to 9 hours of usable sunshine, the SolarPedalflo can deliver over 10,000 liters (2,600 gallons) of potable, treated water using the sun as primary power. On overcast days, or when sufficient solar power is not available, the human power secondary system can be utilized so that good dependable water is always available. Where more water is needed, early morning and late afternoon users could pedal for their water.

Dr. John L. Tarpley spent 15 years (1978-1993) in Ogbomoso, Nigeria as a surgeon in a Baptist Missionary Hospital. During David Eller’s frequent visits, he was inspired by Dr. Tarpley to help aid in delivering clean water to rural villages. This inspiration led to the SolarPedalflo technology. Today, Dr. Tarpley is a Professor of Surgery at Vanderbilt University and has this to say about theMWISolarPedalflo Pump and its benefits:

Two out of five Nigerian children die by the age of five, in great part because of impure and inadequate water. The provision of adequate and safe water in the developing world will do more to prevent disease and promote health than any other single measure. The SolarPedalflo unit represents a needed marriage of modern engineering with appropriate technology. This is an exciting boon for millions in the tropics, especially children and particularly Africa.
John L. Tarpley, M.D.