Developing knowledge and capacity in water and sanitation
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CPD 7-1 Section of grease trap
CPD 7-2 Section of a drain for evacuating stormwater and sullage
Drainage trench with concrete slabs
Mechanised cleaning of an earth drain
Removing silt manually from a drain
Repairing a drainage trench
A stormwater drainage system
Drainage channel designs
Road acting as a drain
Stormwater drainage system