Water Supply | Sanitary Well
Posted April 2, 2008on:
Environmental Health – Sanitary Well
Sanitary well can be defined as ‘a well which is properly located, well constructed, and protected against contamination with a view to yield a supply of safe water’.
Constructing a Sanitary Well
These should be taken into consideration in order to construct a sanitary well.
- The well should be sunk in ‘good’ soil and should be sited high enough to prevent flood waters from entering it, also located far enough from latrines to prevent contamination.
- It should have casing (lining) which is made of brickwork or concrete; it must be water-tight at least 3 meters (10 feet) deep so that the water in the well is only from the soil.
- It must have parapet of sufficient height above the ground level at the mouth of the well to prevent anything from falling into the well. A cover should also be provided.
- An apron (platform) made of concrete surrounding the well can further prevent seepage of water from the surface into the well. The apron should be sloping with a drain incorporated.
- Ideally, a pump should be installed. Parapet is not necessary if the pump is installed.
An ideal well is a sanitary well installed with a pump.
Adapted from: Lecture notes Environmental Health – Water Supplies part 2; by Dr. Htay Moe of Department of Social and Preventive Medicine, University of Malaya.