Polybutylene pipe was once a popular type of piping in local homes, but it has since been found to be defective and prone to leaks. If you suspect that you have polybutylene pipe in your home, you should call a plumber to inspect it. Polybutylene pipe is typically blue or gray in color, so if you see any piping that matches this description, you should assume that it is polybutylene and call our plumbers to upgrade your water line.