Utilization of non-traditional water resources in Hangzhou

Give priority to the use of reclaimed water mixing and reclaimed water maintenance, and collect rainwater for nuclear engineering maintenance in areas where conditions permit. Option a is wrong; Non-traditional water sources are preferred for on-site washing machines and equipment, and municipal tap water is not used as much as possible. Option B is wrong; In the construction site of foundation pit dewatering stage, groundwater should be given priority as concrete mixing water, maintenance water and washing water, and option C is wrong.