Which department should I find to solve the problem of water accumulation in the community?

Legal analysis: this situation can be solved by finding a property management coordination developer first. If you can't solve it, you can complain to the quality supervision station under the Construction Bureau. The quality supervision station has the right to ask the construction unit, the original design unit and the construction unit to send people to analyze the causes of water leakage and formulate rectification plans.

Legal basis: Article 942 of the Civil Law of People's Republic of China (PRC) stipulates that the property service provider shall, in accordance with the agreement and the nature of the use of the property, properly repair, maintain, clean, afforest and manage some owners in the property service area, maintain the basic order of the property service area, and take reasonable measures to protect the personal and property safety of the owners.

Property service providers shall take timely and reasonable measures to stop acts that violate laws and regulations such as public security, environmental protection and fire protection in the property service area, report to the relevant administrative departments and assist in handling them.