Hand Dug Well

When a community has a good supply of water near the surface of the ground, a hand dug well is usually the best project type to construct. With the guidance of a water expert, community members help dig the well from 8 to 15 meters deep. Concrete rings are stacked inside the well prevent cave-ins and a filtration system is used along the entire depth of the well shaft. Once complete, the hand dug well is covered with a large concrete cap and a hand pump is installed. This allows the community members to pump clean, filtered, and protected water up from the ground.

 

 

 

Spring Protection Development

Sometimes natural springs provide a continual source of water in a community. The problem is that this otherwise clean, water is contaminated by dirt, bacteria, and bugs and the people must share the spring with animals. This makes the water dangerous. In these cases, a spring protection system is developed. The eye of the spring is carefully capped and covered with a large cement protection box. The box protects the water from surface contamination and also contains a natural filtration system of river gravel and sand. The clean, filtered water is then piped to a reservoir where it collects overnight. During the day, the clean water that has been collected is piped to distribution points where community members can collect it.

 

Shallow Borehole

When there is not spring available and the water is too deep underground for a hand dug well, a drilling machine is needed to access the water in the deep aquifer. These types of projects are called shallow boreholes and they utilize drilling rigs to dig to depths of 20-50 meters. For a shallow borehole, a rig will drill until water is hit. Then a steel casing is inserted into the long well shaft to protect the deep well from collapsing and to prevent contamination of the pure water in the aquifer. A pump is then used to bring this safe, clean water to the surface for communities to use.

 

 

 

Deep Borehole

In some cases, even a borehole of 20-50 meters isn’t deep enough to reach water. In instances like this, heavy equipment and very deep drilling is required. For these cases, we employ deep borehole project types. Usually drilled to a depth of 50 to 250 meters, deep boreholes are the most difficult and expensive water projects to construct. They require a large team of drillers and must be fueled by deisel generators or connected to a power grid. However, if drilled into a high volume aquifer, these deep boreholes can yield a high enough volume of water to serve more than 15,000 people per year.