What if the property cuts off water for us privately?

This kind of thing is usually solved by the government. I have encountered some similar disputes. If the government comes forward to coordinate (in fact, the street or district government will coordinate in person), things will wait for a good result, such as restoring water supply first, then negotiating, and finally the residents pay part of the water fee, and the property also makes some concessions, and then the water fee relationship between residents and property is adjusted to the relationship between residents and water supply companies, thus solving the problem once and for all.

We must pay attention to the collective strength. When the government comes forward to solve the problem depends on the severity of the problem. If it is a problem of several people, it will be much slower to solve. If you are a collective problem, you will basically be taken seriously.

I don't know if my answer will satisfy you, but I have experienced your troubles.