1. APHA (American Public Health Association) 2003, Standard methods for examination of water and wastewater specifications, 19th Edition, Washington.D.C.
2. ARGOSS, 2001. Guidelines for assessing the risk to groundwater from on-site sanitation. BGS Report CR/01/142, Key worth.
3. Underground pollution travel from leach pits of on-site sanitation facilities: a case study;Banerjee;Clean Technol Envir,2011
4. Groundwater information booklet. 2013 Ramanagaram and Bangalore Rural Districts Central ground water board.
5. Pit Latrines and impacts on groundwater quality; A systematic Review;Graham;Environ Health Perspect,2013