The answer to 'sewer line low water pressure' is that the most common causes are a blockage, leak, or damage in the sewer line. This can lead to reduced water flow and decreased water pressure throughout the home's plumbing system. Symptoms may include slow draining sinks and tubs, gurgling sounds, and even sewage backups.
To troubleshoot, you can start by checking for visible signs of a problem, like standing water or a musty odor around the sewer cleanout. If you suspect a blockage, you can try using a plumber's snake or auger to clear the line. However, if the issue is more serious, like a cracked or collapsed pipe, it's best to call in a professional plumber to properly diagnose and repair the problem.