Waterproof warranty for 5 years and pipeline for 2 years. During the warranty period, the developer is not responsible. If not handled, you can complain to the local quality supervision department. They specialize in this matter, and then you can't go to court, or you will be responsible for delaying the warranty period! In addition, if the same place is not repaired twice during the warranty period, you can find someone to repair it yourself, and the cost will be borne by the developer. More information, better suggestions, free professional technical advice on concrete waterproofing and leakage stoppage, avoiding the troubles of repairing today, leaking tomorrow, repairing every year and leaking every year.