According to the guidelines for green construction, the statement about the utilization of non-traditional water sources is correct ().

P 187- 19 1

Non-traditional water source utilization: (1) Give priority to reclaimed water reuse and reclaimed water conservation, and rainwater should be collected for conservation in areas and projects where conditions permit. (2) In the dewatering stage of foundation pit on the construction site, groundwater should be used as concrete mixing water, maintenance water, washing water and part of domestic water in priority. (3) Non-traditional water sources are preferred for field machines, equipment, vehicle washing, pavement spraying and greening irrigation, and municipal tap water is not used as much as possible. (4) Large-scale construction sites, especially those in areas with abundant rainfall, should establish a rainwater collection and utilization system to fully collect natural precipitation for use in suitable parts of construction and life. (5) Strive to reuse more than 30% of non-traditional water sources and circulating water in the construction process.