· Mechanical pumps will often be needed. Seek
expert local advice on what is suitable and remember there will be future need
of operators, fuel and spares.
· Pumping requirements should always be calculated to be
minimal. Maximum use of gravity flow for treatment processes, water conveyance
and distribution should also be pursued.
· As it is always difficult to predict for how long a
refugee water supply will be required, emergency water supply solutions
involving pumping devices should guarantee a long-term and effective system from
the beginning. Ad-hoc approaches to solving emergencies are bound to be
problematic and difficult to operate and maintain, unless solutions are chosen
in accordance with the realities of the site, the long-term operation and
maintenance possibilities available and sound engineering