In indoor water supply and sewerage engineering,some measures can be taken to save water,which are to use water saving facilities,to reuse wastewater from buildings,and to manage water supply scientifically.

By comparing expect profits of water supply companies from innovation of water saving irrigation facilities under different hypothesis,Nash equilibriums under different situation are analyzed.

Therefore water saving potentiality is understanded and water saving measure is determined, to realize scientific management water, scientific using water and water saving, the basic is settled.

Status of watar system management and water saving measures in Zhengzhou Thermal Power Plant;

Water balance test and water saving measures in Dawukou Power Plant;

Water consumption quota is obtained through water consumption statistics and analysis in several zinc smelters and water saving measures for zinc smelters are also proposed in this paper.

Application of ET in the management of water-saving measures

Then these problems existed was pointed out water-saving forms,ways of plant configuration and water-saving measures of waterscape design in arid areas are put forwardinally.

The result shows that some water-saving measures,such as canal lining and relative canal system construction,and some water management measures have remarkable influence on the decrease of irrigation water quantity.