This [http://wwwwiki.lifewaterwatermissions.org/resources/san1(X(1)S(x3fkdoq5xqskutjl4j4gkmid))/GetFile.aspx?Page=Simple%20Excreta%20and%20Washwater%20Disposal%20SAN1&File=san1d4.pdf document] lists the specifications that need to be met for a succesful Aqua Privy.
===References===
* Crites, R. and Tchobanoglous, G. (1998). Small and Decentralized Wastewater Management Systems(Book). WCB/McGraw- Hill, New York, US.
* Mara, D. D. (1996). Low-Cost Urban Sanitation(Book). Wiley, Chichester, UK. (Sizing, volume and emptying calculations and example
* Polprasert, C. and Rajput, V. S. (1982). [https://www.susana.org/_resources/documents/default/3-2995-7-1519811046.pdf Environmental Sanitation Reviews. Septic Tank and Septic Systems]. Environmental Sanitation Information Center, AIT, Bangkok, TH. pp. 68-74. (Comprehensive design manual)
* Ulrich, A. (Ed.), Reuter, S. (Ed.), Gutterer, B. (Ed.), Sasse, L., Panzerbieter, T. and Reckerzügel, T. (2009). [https://wedc-knowledge.lboro.ac.uk/resources/books/DEWATS_-_Chapter_01.pdf Decentralised Wastewater Treatment Systems (DEWATS) and Sanitation in Developing Countries. A Practical Guide]. WEDC, Loughborough University, Leicestershire, UK.