Economic Evaluation of Water-conservation Equipment in Residential Building

According to contrastive analysis of diversified water-conservation equipment’s water-consumption in residential building,this paper elicits the average actual water-saving consumption per person per day.Based on the calculational method of water-saving consumption,this paper puts forward the economic evaluation method for the building without the water-conservation equipment rebuilt on the building with water-conservation e-quipment.This method has factuality and practicability,it can be the theoretical foundation and banausic tech-nique for the water conservation work in building.By the example,it can elicit that the proportion of the water used in flushing toilets and in bathing is prodigious in total household water consumption,so it is necessary to adopt water-saving toilets and water-saving shower nozzles.