If the sub soil contains stone, will it be possible to construct leach pit toilets?
If the stones are below 5-6 ft. deep from the soil level such toilets can be constructed without any problem. If the soil can absorb water, such leach pit toilets can be constructed. Sometimes it is noticed that the sub soil contains black soil. Black soil has less pores and water absorption capacity. Is it possible to construct leach-pit toilets in such black soil. All types of soil have small pores to absorb water and black soil also has such pores. It is true that the pore size of the black soil is smaller than the sandy soil leading to less absorption. It is expected that average 60 liters of water per day may be consumed in a leach pit toilet and that much water can be absorbed by black soil also. However, if it is noticed in a particular area that absorption capacity of water is low, it is advisable that a sand lining can be given all along the pit to increase its absorption capacity.
