This study was undertaken to create an understanding of greywater characteristics and to demonstrate a low
cost reuse option involving application of small tower gardens for Greywater treatment and reuse in a peri-urban
settlement, Kawaala in Kampala city, Uganda. To realise this, field surveys, greywater and soil sampling and analysis and,
tower garden installation at selected households were undertaken. The common sources of greywater in Kawaala were
found to be kitchen, bathroom and laundry with the majority of the households (72%) pouring laundry water in open
drains and spaces adjacent to their homes. The greywater generated in the area exhibited high BOD5 (71-873 mgL-1)
and COD (140-4886 mgL-1) and E.Coli (<0-13900 cfu per 100 mL) values necessitating treatment prior to disposal in the
environment. The greywater had low average BOD5/COD ratio (<0.5) meaning that it is not easily treatable by biological
means. Greywater application to the tower gardens, had limited impact on the soil potassium, organic matter and nitrogen
content but increased the phosphorus content. The vegetables grown in the greywater towers thrived but were attacked by
pests necessitating pest control. The households with the tower gardens appreciated the simplicity of the technology.
To create demand for it requires sensitization and social marketing within the community. There is need to determine the
hydraulic load of a tower garden to guide the number and size for a particular quantity of generated greywater for
optimum performance. Also further monitoring is needed to ascertain the vegetable yield per soil volume, impact on crop
growth and people's livelihoods.