You read earlier about the need to consider groundwater contamination. For any type of pit latrine, the location of the pit relative to water sources is of prime importance. Distance from houses and the users also needs to be considered.
The availability of water will determine whether or not a water-flushed system is possible. If an adequate water supply is available, pour-flush or cistern-flush toilets can be considered as an option. Otherwise, pit latrines have to be the system of choice. The space requirements (especially in urban areas) may limit the choice of systems that can be installed.
5.7 Choice of latrine technology
5.7.2 Construction materials