The answer to 'how to maintain sewer repair' is to regularly inspect and clean your sewer lines to prevent clogs and damage. This involves using a sewer camera to check for any blockages or issues, and then using a high-pressure water jet to flush out the lines and remove any debris or buildup.
It's recommended to have your sewer lines professionally inspected and cleaned every 1-2 years, or more frequently if you have frequent clogs or issues. This will help ensure your sewer system is functioning properly and prevent costly repairs down the line.