Legal analysis: Who is responsible for the blockage of the kitchen drain pipe in the restaurant is the responsibility of the restaurant owner, because the restaurant sewage cannot be directly discharged, which is the basic premise of the restaurant sewage discharge. The direct discharge of catering sewage will pollute the environment, block the pipeline and affect the drainage system of the city. The person in charge of the corresponding restaurant should be responsible for the blockage of the kitchen drainage pipe caused by improper sewage treatment. The catering unit should first set up a grease trap, and the filtered food residue belongs to the kitchen waste and enters the garbage for classified treatment. Finally, the filtered restaurant sewage is discharged into the urban sewage pipe network and enters the urban sewage treatment system.

Legal basis: Articles 9 and 11 of the Decision of the NPC Standing Committee on Amending the Law of the People's Republic of China on the Prevention and Control of Water Pollution are changed to Article 19, which is amended as: "Urban sewage should be treated centrally. "The relevant departments of the State Council and local people's governments at all levels must incorporate the protection of urban water sources and the prevention and control of urban water pollution into urban construction planning, build and improve urban drainage networks, build urban sewage centralized treatment facilities in a planned way, and strengthen the comprehensive improvement of urban water environment. "Urban centralized sewage treatment facilities provide paid services for sewage treatment to polluters in accordance with state regulations, and charge sewage treatment fees to ensure the normal operation of centralized sewage treatment facilities. Those who discharge sewage into urban centralized sewage treatment facilities and pay sewage treatment fees will no longer pay sewage charges. The sewage treatment fees collected must be used for the construction and operation of urban centralized sewage treatment facilities and shall not be used for other purposes. "The specific measures for sewage treatment fees, management and use of urban sewage centralized treatment facilities shall be formulated by the State Council."