| Water purification, distribution and sewage disposal for Peace Corps volunteers |
|Section 7: Scope of disposal system projects in host communities|
The health objective of sanitary excrete disposal is to isolate faeces so that the infections agents in them cannot possibly get to a new host. Fig. 2B shows the place where a sanitation officer might choose to erect a barrier to break the chain of disease transmission from excrete.
Any adequate disposal system must satisfy the following four conditions:
1. The surface soil should not be contaminated.
2. There should be no contamination of ground water that may enter springs or wells.
3. There should be no contamination of surface water.
4. Excreta should not be accessible to flies or animals.
In addition it is highly desirable that
1. there should be no handling of fresh excrete; or, when this is indispensible, it should be kept to a strict minimum.
2. there should be freedom from odors or unsightly conditions.
3. the method used should be simple and inexpensive in construction and operation.