What should I do if the owner is injured due to water leakage caused by water pipe mistakes during property decoration?

The property is responsible for maintenance and compensation.

If the property carries out renovation and installation of the waterway, and pumping water without checking whether the renovation meets the requirements, causing losses such as water leakage, the property shall bear corresponding maintenance and compensation responsibilities.

For details, please refer to the National Administrative Measures for Interior Decoration of Residential Buildings and Administrative Measures for Quality Warranty of Housing Construction Projects.