The present invention is a water intake unit provided with a water collection well, a water intake pipe connected to one end of the water collection well, and a maintenance pipe connected to the other end of the water collection well; And a connection part communicatively connected to one end of the water intake unit, wherein at least two of the water intake units are connected by the connection part to provide a sand dam slow filtration parallel type water intake system, whereby the horizontally arranged water intake is provided. Since a plurality of intake units including pipes are arranged in parallel, it is possible to maximize the amount of alluvial filtered water intake of the sand dam and to clean it, thereby improving maintenance efficiency.
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