The answer to 'repairing slow draining' is that slow draining can be caused by a variety of issues, from buildup in the pipes to more serious problems like a clogged main sewer line. Symptoms may include water draining slowly in sinks, tubs, or showers, or even backing up into the home.
For minor clogs, you can try DIY solutions like using a plunger or drain snake to clear the blockage. However, if the problem persists or you suspect a more serious issue, it's best to call in a professional plumber. They can diagnose the root cause and provide the appropriate solution, whether that's clearing a clog, repairing a damaged pipe, or even repiping the entire system.