Efficiency Measurement of China’s Water Supply Industry and Analysis of Its Influencing Factors

Abstract

Based on micro-data on water supply listed companies, the three-stage super-efficiency DEA model is used to measure the efficiency of China’s water supply enterprises from 2016 to 2020, and tries to combine the evolutionary game method and the Gini coefficient for further analysis. The empirical results demonstrate that: 1) from the result of the first and three-stage DEA model, the efficiency values of sample enterprises show that there is still room for further improvement and development of enterprise efficiency; 2) according to the subsample analysis, the efficiency value of large-scale and high-financing enterprises is higher than that of small-scale and low-financing enterprises; 3) from the evolutionary game results, when large-scale enterprises players all chooses a high-financing strategy, and small-scale enterprises players choose low-financing strategy, the overall balance point of the game is reached.