Legal analysis: If the water leakage is not caused by people downstairs, it is the responsibility of the upstairs. The upstairs has the responsibility to repair the water until it no longer leaks downstairs and compensate for the corresponding losses downstairs. If the coordination between the two parties fails, a civil damages lawsuit can be filed in court. The court will assess the extent of the damage and determine that the neighboring party has caused obstruction or loss. It should stop the infringement, eliminate the obstruction, and compensate for the loss. If the neighboring party fails to comply with the court's judgment, the damaged party can ask the construction team to repair the damage from downstairs, and the cost incurred can be submitted to the court for compensation from the owner of the building upstairs. In actual trials, judges often believe that the maintenance costs for the walls, floors and private parts of the house should be borne jointly by the owners of the building on the same wall or above and below the floor. However, if the cause of repair can be attributed to an owner, the cost shall be borne by that owner.
Legal basis: Article 288 of the "People's Republic of China and Civil Code" Neighboring rights holders of real estate shall, in accordance with the principles of conducive to production, convenient life, solidarity and mutual assistance, fairness and reasonableness, correctly Handle adjacency relationships. Property management disputes caused by water leakage upstairs can be determined based on the principle of fault liability in civil law.