My upstairs toilet leaks, and the upstairs residents will not solve it. What should we do?

It is best for both sides to settle it through friendly negotiation. If negotiation fails, you can go to court to sue the upstairs owner and ask him to waterproof the bathroom and bear the losses caused to you.

It's best not to take the sentence "We all go from the kitchen to the water supply pipe. If they are unreasonable, I just want to open a valve in my house to prevent his house from getting water", which is illegal and will only make things worse!

The legal basis of water leakage is: the damaged party must first ask the quality inspection department of the house to make an appraisal report on the causes of water leakage and how to make up the leakage; If it is identified as the fault of the neighboring party, the neighboring party may be required to repair it immediately or in time according to the report, and may be required to compensate for the damage caused during the repair period. If the neighboring parties do not cooperate, the injured party may submit the dispute to the court. Its legal basis is Article 83 of the General Principles of Civil Law: the neighboring parties of real estate should correctly handle the neighboring relations in terms of water interception, drainage, transportation, ventilation and lighting in accordance with the spirit of convenient production, convenient life, solidarity and mutual assistance, fairness and reasonableness. If it causes obstruction or loss to the neighboring party, it shall stop the infringement, remove the obstruction and compensate for the loss. If the neighboring party fails to perform the court's judgment, the injured party may ask the construction team to repair it downstairs, and the expenses incurred may be claimed by the upstairs owner to the court. If there is no compensation upstairs, you can apply to the court for enforcement.