Which department should I complain to if I change the owner's main water pipe privately?

If the property changes the owner's main water pipe privately, you can complain to the city water supply administration.

According to the provisions of Article 1 of Chapter 5 of the Water Supply Regulations of People's Republic of China (PRC), urban tap water supply enterprises and enterprises with self-built facilities for external water supply shall regularly inspect and maintain the special reservoirs, water diversion channels, water intakes, pumping stations, well groups, transmission (distribution) water pipe networks, household water meters, clean (distribution) water plants, public water stations and other facilities under their management to ensure safe operation.

1. Outdoor pipelines and ancillary facilities built by water users and connected to urban public water supply pipelines must be accepted by urban tap water supply enterprises and handed over to their unified management before they can be used.

2, in the provisions of the urban public water supply pipeline and its above-ground and underground ancillary facilities within the scope of safety protection, it is forbidden to dig holes to borrow soil or build buildings, structures and other activities that endanger the safety of water supply facilities.

3. If it is really necessary to modify, dismantle or relocate urban public water supply facilities, the construction unit shall report to the competent department of urban planning administration of the people's government at or above the county level and the competent department of urban water supply administration for approval, and take corresponding remedial measures.

4. Before the construction project involving urban public water supply facilities starts, the construction unit or construction unit shall find out the underground water supply pipe network from the urban tap water supply enterprise. If the construction affects the safety of urban public water supply facilities, the construction unit or the construction unit shall agree with the urban tap water supply enterprise on corresponding protective measures, and the construction unit shall implement them.

5. It is forbidden to connect the self-built water supply pipe network system with the urban public water supply pipe network system without authorization; Under special circumstances, if it is really necessary to connect, it must be approved by the city tap water supply enterprise and reported to the city water supply connection to take necessary protective measures.

Units that prohibit the production or use of toxic and harmful substances directly connect their production water WAN system with the urban public water supply WAN system.

Extended data:

Article 2 of Chapter 6 of the Regulations on Urban Water Supply in People's Republic of China (PRC) violates the provisions of these Regulations, and if one of the following acts occurs, the competent administrative department of urban water supply or its authorized unit shall order it to make corrections within a time limit and may impose a fine:

1, failing to pay the water fee as required;

2, misuse or misappropriation of urban public water supply;

3, endangering the safety of water supply facilities within the scope of the provisions of the urban public water supply pipeline and its ancillary facilities;

4 connecting the self-built water supply pipe network system with the urban public water supply pipe network system without authorization;

5 units that produce or use toxic and harmful substances directly connect their production water pipe network system with the urban public water supply pipe network system;

6. Pumping water directly on the urban public water supply pipeline;

7, unauthorized removal, modification or relocation of urban public water supply facilities;

Baidu Encyclopedia-People's Republic of China (PRC) City Water Supply Regulations