Why is the water fee a property fee in Bihai Dream Garden, Chengmai Ancient Town, Hainan?

The property is responsible for collecting water charges. The property information of Bihai Mengyuan in Chengmai Old Town, Hainan shows that the property has the responsibility to collect water and electricity fees, which are paid in the property and collected by the property. Hainan, referred to as "Qiong" for short, is the capital of Haikou, a provincial administrative region and special economic zone of China people.