What is the purpose of a sewer cleanout plug and how can it be accessed for maintenance or repairs?

The purpose of a sewer cleanout plug is to provide access to the sewer line for maintenance or repairs. It is typically located at ground level and can be unscrewed using a wrench or pliers to open the cleanout for inspection or clearing blockages. Regular maintenance of the sewer cleanout plug can help prevent clogs and ensure proper functioning of the sewer system.