Who is responsible for the blockage of rainwater pipes?

First of all, you have already paid the public maintenance fund when you checked in, that is, to maintain various public facilities, including rainwater pipes. However, considering that your personal renovation has changed the sewage pipe and connected your own sewage pipe to the rainwater pipe, it is essentially wrong, but everyone can decorate or change the pipe (especially when it involves public facilities), and major changes must be approved by the property before construction. Since the property didn't stop you from changing, you agreed. (First of all, the owner doesn't know much about professional renovation contract, and he doesn't know where to move and where not to move. ) Then rain pipes or public facilities must be maintained by property. But because one is the owner and the other is the property, don't make too much trouble, we can solve it through consultation. I wish the problem an early solution!