This study aims to assess the parameters removal efficiency of waste stabilization ponds of Swaswa area in
Dodoma municipality. The study was done by analysing nine parameters in groups of biochemical and
nutrients parameters. One year (2010) analysis was done in monthly intervals from January to December.
Some of parameters were analysed in situ while the rest are taken to Dar es Salaam for laboratory analysis
where by the water samples were taken in 4o
C equipment for transportation. Results show very low removal
efficiency for most of parameters from no removal at all to 26.7% (BOD5, pH, TDS, E.C, Total alkalinity, and
Total hardness, NO3-N and PO4-P) from the influent to the final effluent. Only turbidity shows an excellent
removal of 98.8%. The removal efficiencies were also compared to general removal efficiencies from other
studies and find out results from this study are very low. This low removal efficiency may be due to incomplete
construction of Swaswa ponds where the third stage of maturation is missing. This stage is essential for
polishing water and nutrient as well as pathogen removal. There is need of frequent awareness campaign to a
community for the reuse of wastewater for agriculture and its possible impacts. Ponds should be modified and
addition of maturation ponds constructed. Further studies are required for pathogen removal assessment and
impacts of reuse wastewater to the food crops.