Table 6.

Turbidity change after treatment with potential mitigation strategy, Tanzania^*

Source	Flocculant/ disinfectant	Simple sand filtration	Ceramic filtration	Cloth filtration	Settling and decanting
River (5.1 NTU)	260%	166%	−47%	−7%	−24%
Lake (18.7 NTU)	73%	−26%	−92%	−8%	−1%
Pond (888.5 NTU)	−61%	−27%	−99%	1%	−17%

^*NTU = nephelometric turbidity units. Negative percentages indicate a reduction in turbidity and positive percentages indicate an increase. Tap, open well, and borehole sources not included because of low initial turbidity.