As a very general guideline it is recommended that bottom of pit should be at least ...............above groundwater level.

as a very general guideline it is recommended that the bottom of the pit should be at least 2 m above groundwater level, and a minimum horizontal distance of 30 m between a pit and a water source is normally recommended to limit exposure to microbial contamination.[1]however, no general statement should be made regarding the minimum lateral separation distances required to prevent contamination of a well from a pit latrine. for example, even 50 m lateral separation distance might not be sufficient in a strongly karstified system with a down gradient supply well or spring, while 10 m lateral separation distance is completely sufficient if there is a well developed clay cover layer and the annular space of the groundwater well is well sealed.