Common signs that you may need water or sewer line repair include slow drainage, frequent clogs, or backups in sinks, toilets, or tubs. You might also notice unusually wet spots or pooling water in your yard, which can indicate a leak or broken line. A sudden drop in water pressure or an unexpected spike in your water bill can also signal an issue. Additionally, foul odors coming from drains or around your home often point to a sewer line problem requiring repair.