The answer to 'my supply line is leaking' is that a leaking supply line is a common plumbing issue that can be caused by a variety of factors, such as worn washers, loose connections, or a damaged line. Symptoms may include dripping water, wet spots around the supply line, or low water pressure. The solution often involves tightening the connections, replacing washers or gaskets, or in some cases, replacing the entire supply line.
If the leak is minor and easily accessible, you may be able to fix it yourself by tightening the connections or replacing washers. However, if the leak is more significant or the supply line is difficult to access, it's best to call a professional plumber. Attempting to fix a complex plumbing issue without the proper skills and tools can lead to further damage and costly repairs.