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 successful Aqua Privy