The upstairs business premises leaked water, causing economic losses to the downstairs, and the upstairs slippers were not treated. Which department can I find to take measures?

First, solve it through consultation; The second is to apply for mediation by neighborhood committees, mediation organizations or property management units; The third is to file an infringement lawsuit with the people's court.

If the upstairs property owner or manager (user) causes losses to the residents or owners in the building due to water leakage, he shall bear tort liability.