Is it illegal to pour dirty water upstairs?

Legal analysis: it depends on the specific situation. Make sure that the place upstairs belongs to the public area or is used by the property management company, and it must be maintained. If it is a household, it belongs to an adjacent relationship and the property can be coordinated. The party suffering losses should inform the actual situation upstairs. However, the property is not a law enforcement department, and it cannot be forced to cut off water and electricity, nor is it a professional appraisal agency. We can only cooperate with both parties to find out the reasons and urge both parties to actively solve them.

Legal basis: Article 1254 of the Civil Code of People's Republic of China (PRC) prohibits throwing objects from buildings. If an object thrown from a building or an object falling from a building causes damage to others, the infringer shall bear tort liability according to law; If it is difficult to determine the specific infringer after investigation, in addition to being able to prove that he is not an infringer, the user of the building who may cause harm shall be compensated. After compensation, the user of the building who may cause damage has the right to recover from the infringer. Property service enterprises and other building managers shall take necessary safety measures to prevent the occurrence of the situations mentioned in the preceding paragraph; Those who fail to take necessary security measures shall bear the tort liability for failing to fulfill their security obligations according to law. In case of the circumstances specified in the first paragraph of this article, the public security organ and other organs shall promptly investigate and find out the responsible person according to law.