Is it dereliction of duty not to inform the owners of vacant houses, water charges and abnormal properties for several years?

According to the signed property contract.

There are two reasons for the abnormal water quantity: one is that users do use a lot of water in the month because of the hot weather and high temperature, which is normal and users don't have to worry. Another reason for the abnormal water quantity is the water leakage in the user's home, so the water quantity has increased without the user's knowledge. In this case, many users will say that they have never seen water leakage in their homes. In fact, many leaking places basically flow through the drainage pipe, so it is not easy to detect.

Many users will hide the water pipes when decorating their homes. Although this achieved the goal of pursuing beauty, it also left hidden dangers. Once there are special circumstances such as water leakage in water pipes, it will be difficult to find them in time, and it will also cause immeasurable economic losses to users.