In some cases, it is possible to repair a water line without professional help. However, there are several issues that should be taken into account before attempting such repairs. Leak detection and sewer pipes can be complex and require specialized knowledge in order to ensure proper repairs. Additionally, local regulations may need to be followed in order for any DIY tips or pipe replacements to be legal. As such, if the issue with the water line requires more than basic knowledge of plumbing, it is advised to seek out a qualified professional rather than attempt a do-it-yourself approach.