Where is a sump typically located?

A sump is designed to collect and manage groundwater or surface water, and it is typically installed below the normal grade of the gravity drainage system. This positioning allows it to effectively gather water, especially in areas prone to flooding or where water has a natural tendency to accumulate. By being below the normal grade, the sump can receive water from surrounding areas by gravity, facilitating efficient removal through pumps when necessary.

In plumbing applications, a sump pit, located below ground level, connects to drainage pipes that carry excess water away from the property. This helps in preventing water damage and maintaining appropriate moisture levels in basements or crawl spaces.

The other scenarios, such as placing a sump above ground level, along surface drainage sites, or on roofs, do not align with the intended function of a sump. A sump needs to be in a position that allows it to effectively collect water and direct it away from critical areas, which is accomplished when it is set below the normal grade.