The answer to 'water line replacement not working' is that there could be several common causes, including improper installation, leaks in the new line, or issues with the main water supply. Symptoms may include low water pressure, leaks, or the new line not functioning properly.
Some potential solutions include checking for leaks, ensuring the new line was installed correctly, and verifying the main water supply is working as expected. If the issue persists, it's best to call a professional plumber to diagnose and resolve the problem, as improper water line replacement can lead to major water damage if not addressed properly.