Final answer:
The warranty on a clogged sewer line varies by service providers and insurance policies. Customers should call a licensed plumber or the installation company for service issues under warranty. For broader issues possibly linked to city lines, contacting the municipal utility department could be required.
Step-by-step explanation:
The warranty on a clogged sewer line can vary depending on the service provider, manufacturer of the pipes, and the terms of any existing homeowners' insurance policies. Typically, warranties for service work like unclogging a sewer line are provided by the plumbing service company and may range from a 30-day guarantee to a few years for parts and labor, provided you have a maintenance agreement or warranty program in place.
If a customer encounters a clogged sewer line, they should primarily reach out to a licensed plumber or the company who installed the system if it is under warranty. In some cases, if a home warranty policy that covers the sewer lines is purchased, the homeowner will need to contact the home warranty company. However, if the homeowner suspects the clog might be connected to city sewer lines, contacting the municipal utility department might be necessary as well.