The downward discharge of air conditioning water seriously affects the business of pavement on the first floor. What department should I call?

You can find a property company or the local urban management department.

Condensed water generated by indoor units when residents use air conditioners to cool down in summer and defrosting water generated by outdoor units when heating in winter can be collected and discharged centrally. Collect water and drain it into the storm drain.

The collection of outdoor defrosting water needs to buy a special water collection and drainage device, which can be found on a treasure website and is very cheap.