Underground accumulated water utilization assembly for building construction

The utility model discloses an underground accumulated water utilization assembly for building construction, and relates to the technical field of underground accumulated water utilization. Comprising a cement floor, the cement floor is provided with a water storage pit used for storing underground accumulated water, a water suction pump used for pumping the accumulated water in the water storage pit is fixed to the cement floor, a sprinkler head is arranged on the water suction pump, and protective fences used for preventing workers from falling off are fixedly installed on the periphery of the water storage pit. Through holes are formed in the surface of the protective fence, and an activated carbon device used for precipitating underground accumulated water and mud is arranged on the protective fence. The activated carbon device arranged on the device can accelerate precipitation treatment of impurities in water, it is guaranteed that the water in the water storage pit can be sprayed for dust falling, mean