General comments are made on in-earth waste storage basins, the parameters that have to be considered and the steps that have to be made in order to prevent seepage beneath the basins are also discussed. Specific guidelines, recommendations, and regulations have to be verified at local or state levels. To prevent the seepage and contamination of groundwater with nitrogen (nitrates) and coliforms (pathogen) in-earth basin has to be lined. An analysis of the situation is essential in order to evaluate the high water table, the proximity of water sources and soils characteristics that could result in heterogeneity or improper clay characteristics . The construction has to be made with a high quality cohesive material to make sure that the soil is molded into a uniform watertight layer. To ensure a maximum bulk density of the material, the construction has to be done at a correct moisture content. The liner has also to be protected in order to maintain its integrity.

Earthen basins can be safe and seepage proof if the proper methods and material are used for the construction. It is not just a question of making a whole on the soil, important parameters have to be evaluated and controlled, such as hydraulic conductivity of the soil that have to be low and also compaction of the material.