|Create Date||May 19, 2016|
|Last Updated||August 8, 2016|
This sizing calculation tool has been designed to assist UNHCR and WASH actors correctly size septic tanks in displaced settings taking into account numbers of users, wastewater and sewage flows, sludge and scum accumulation rates, desludging periods, liquid retention times, and average annual ambient temperatures.
The tool can be used for any size of septic tank from individual household units, to larger structures treating communal toilet blocks, or groups of households connected by a communal sewer.
|F-401/2016a Septic Tank Sizing Spreadsheet (UNHCR, 2016) - EXCEL||Download|