Who is responsible for the leakage of the main sewer pipe on the balcony?

It depends on what balcony it is. If it is a public balcony, it belongs to property management, and its own balcony belongs to personal management, and the property is not responsible.

Legal basis:

property management regulations

Fifty-first water supply, power supply, gas supply, heating, communications, cable television and other units shall bear the responsibility for the maintenance and conservation of related pipelines and facilities in the property management area according to law. If the units specified in the preceding paragraph temporarily occupy or dig roads and sites due to maintenance, they shall promptly restore the original state. Forty-ninth public buildings and facilities built according to the plan in the property management area shall not be changed. If the owner really needs to change the use of public buildings and facilities, he shall inform the property service enterprise after handling the relevant formalities according to law. If the realty service enterprise really needs to change the use of public buildings and facilities, it shall be submitted to the owners' meeting for discussion and approval, and the owners shall go through the relevant formalities according to law.

Fiftieth owners and property service enterprises shall not occupy or dig roads and sites within the property management area without authorization, which will harm the interests of owners. The owner really needs to temporarily occupy or dig roads and sites due to property maintenance or public interests. The consent of the owners' committee and the realty service enterprise shall be obtained; If it is really necessary for a realty service enterprise to temporarily occupy or dig roads and sites, it shall obtain the consent of the owners' committee. Owners and property service enterprises shall restore the roads and sites temporarily occupied and excavated to their original state within the agreed time limit.

Article 53 The owners of residential properties, non-residential properties in residential quarters or non-residential properties connected with the single structure of residential buildings shall pay special maintenance funds in accordance with relevant state regulations. Special maintenance funds shall be owned by the owners, and shall be used exclusively for the maintenance, renewal and transformation of property parts and facilities after the expiration of the property warranty period, and shall not be used for other purposes. Measures for the collection, use and management of special maintenance funds shall be formulated by the construction administrative department of the State Council in conjunction with the finance department of the State Council.

Fifty-fourth the use of property * * * with parts, * * with facilities and equipment for business, should obtain the consent of the relevant owners, owners' congress, property services companies, in accordance with the provisions of the relevant procedures. Owners' income should be mainly used to supplement special maintenance funds, and can also be used according to the decision of the owners' congress.

Fifty-fifth property security risks, endangering public interests and the legitimate rights and interests of others, the responsible person shall timely repair and maintenance, the relevant owners should cooperate. If the responsible person fails to perform the maintenance obligation, it can be maintained by the property service enterprise with the consent of the owners' meeting, and the expenses shall be borne by the responsible person.