What should I do if a water leak upstairs causes a power outage downstairs?

1, you can find it upstairs. It belongs to upstairs infringement, causing damage to your house. You should stop the infringement and compensate for the loss. If negotiation fails, we can only sue.

2. Appraisal by the Engineering Quality Testing Center.

3. Is the dripping sound of mops and air conditioning pipes that loud?

You can complain to the environmental protection department. If the noise does exceed the standard, it is an infringement of neighboring rights, and the infringement should be stopped and the losses should be compensated. If negotiation fails, you can sue.