To reduce a load for treating sewage at a pump plant or treatment plant.
A storage facility pump control system controls an operation of a recirculation pump and drain pump of a storage facility intermediately accompanied by a sewerage line. If it is judged that the stored water is not required to be treated, based on a volume of water 51 stored in the storage facility and water quality 52 of stored water, the drain pump is activated 11 to discharge the stored water into a river. If it is judged that the stored water is required to be treated, the recirculation pump is activated 12 to send the stored water back to a pump plant or treatment plant. If the volume of the stored water is judged to be equal to or less than a predetermined volume, water quality evaluation means 3 stops operation of the recirculation pump.
YAMADA TOMIO
NAKADA MASASHIROU
TSUTSUMI MASAHIKO
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