The answer to 'water line making gurgling noise' is that a gurgling sound in your water lines is typically caused by air bubbles or blockages in the plumbing system. This can be a sign of a more serious issue, such as a leak, clogged drain, or problem with the water pressure.
Some common causes of a gurgling water line include a clogged vent pipe, a problem with the septic system, a blockage in the main sewer line, or a leak in the water supply line. The gurgling sound is often caused by air being drawn into the system, which can indicate a larger problem that needs to be addressed.