Do residents need to adjust the water exchange pipeline of the building?

No need. The tap water pipeline in the residential area of the building belongs to the property, and the water exchange pipeline of the whole building is managed by the property, so the water exchange pipeline of the whole building does not need to be coordinated by the residents themselves. Real estate can be sold at one time, or rented out sporadically, and can be consumed while circulating; Its value can be recovered at one time or many times over a long period of time. According to China's "Property Management Regulations", the owners' congress has the right to decide to hire and dismiss property management companies.