How to complain about flooding caused by property problems?

Legal analysis: you can take photos of flooded houses and collect evidence, and negotiate with the property department to solve the problem. If negotiation fails, you can take legal action. The quality of residential property services shall be subject to the supervision of the residential owners' committee. If the service quality does not match the charging price, you can directly negotiate with the property management company through the owners' committee, or even hire other property management companies to manage the community according to the contract.

Legal basis: Article 119 of the Civil Procedure Law of People's Republic of China (PRC) must meet the following conditions: (1) The plaintiff is a citizen, legal person and other organization that has a direct interest in the case; (2) Having a clear defendant; (3) Having specific requests, facts and reasons; (4) It falls within the scope of civil litigation accepted by the people's court and is under the jurisdiction of the sued people's court.