Legal analysis: The division of responsibilities for this problem can be divided into the following three situations: 1. If the public sewer pipe is damaged and cracked during the warranty period of the house, causing water leakage, the property management company should be notified and the construction unit should be rectified and repaired.

The construction unit is responsible for maintenance and compensation.

2. If the company's sewer pipe is damaged and cracked beyond the house warranty period, causing water leakage, the property management company should be notified, and the property management company will use the housing company's maintenance fund paid by the owner to repair and compensate for related losses.

3. If it leaks downstairs through the gap between the sewer pipe wall and the floor slab, the leaking water does not come from upstairs (the upstairs leaks into your home through the contact between the sewer pipe wall and the floor slab, and then continues to pass through your home)

If the gap between the wall of the sewer pipe and the floor leaks to the floor), in this case, the upstairs will bear the relevant maintenance and compensation responsibilities; if the pipe wall of the main sewer pipe leaks to the ground, the wall of the main sewer pipe comes into contact with the floor.

If there is leakage from the gaps to the downstairs, the relevant repairs and compensation will be borne by you. If it is the responsibility of your own decoration construction unit, you can recover compensation from the decoration construction unit.

Legal basis: "Property Management Regulations" Article 35 Property service enterprises shall provide corresponding services in accordance with the provisions of the property service contract.

If a property service company fails to perform the stipulations in the property service contract, resulting in damage to the owner's personal or property safety, it shall bear corresponding legal liabilities in accordance with the law.