Water Supplies, Uganda | Water

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In focus

Ground Breaking event for Water and Sanitation Project, UgandaThe project provided water supply, sanitation, stormwater drainage and solid waste disposal to seven towns in Uganda; Iganga, Mityana, Mpigi, Kigumba, Apac, Nebbi and Pakwach. Mott MacDonald responsibilities included design review, tender issue, pre-bid site visits, tender evaluation, assisting with tender negotiations, construction supervision, commissioning and project management. The construction was carried out in three contracts: Lot 1 for Iganga, Lot 2 for Mityana, Mpigi and Kigumba, Lot 3 for Apac, Nebbi and Pakwach. Total value of construction was about $35 million.

Iganga was supplied with treated water from Jinja, about 40km away, utilising the spare capacity at Jinja water treatment works. Initial proposals were for a pumping scheme but early in construction it was identified that a gravity supply was feasible, providing both construction and operational cost savings. Provision included a transmission main for future supplies to the trading centres along the route. A new sewage treatment works was constructed comprising facultative and maturation ponds. The existing stabilisation pond system was rehabilitated.

Mityana and Mpigi both abstract water from swamp sources which is then treated by aeration, coagulation, clarification, rapid gravity filters, pH correction and chlorination. The raw water source for Pakwach is the Albert Nile; water treatment comprises slow sand filtration and chlorination. Water is abstracted at Nebbi from the River Nyawarddo and treated using pre-settlement, roughing filters and slow sand filters before chlorination. Apac and Kigumba are supplied by chlorinated water from boreholes.

Water from the treatment works is pumped into elevated tanks that supply the distribution systems. Raw water pumping stations, boreholes, transmission mains, water treatment works, clear water pumping stations, elevated tanks, distribution systems and customer connections were all constructed by the project.

Public sanitation facilities, school sanitation, stormwater drainage and solid waste collection and disposal were also provided by the project in the seven towns. In addition, community mobilisation, institutional strengthening, health education and training were carried out.