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>>When incorporated with the current AguaClara water treatment process, the granular filtration with the clear well backwash system must consistently meet the target effluent goal of 1 NTU or lower.
>>Do not require >>Operate without electricity.
>>Economically sustainable-construction material must be relatively cheap and readily available in Honduras; operation costs must be minimal.
>>The filtration and backwash system design must be simple in order to facilitate operation and maintenance as much as possible.
>>The filtration and backwash system must be open so that the operator can easily observe the workings of the system.
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