Fixing a Disappearing Pool Border: Drain Rock vs. Berm

Your county requires a 2-foot border around the in-ground pool. If soil keeps washing away, you likely need a berm (a raised earthen lip) to contain splash-out, not just drain rock. Here’s how to diagnose and solve it.

Clarify the Requirement

A “2-foot dirt border” usually means a 2-ft-wide, slightly raised perimeter that keeps pool water from eroding the yard. If water flows away from the pool, drain rock in a trench can help. If water flows toward the pool or stands, you need a berm + surface grading.

Proper Drain Rock Installation

1. Excavate a 12″-wide, 12″-deep trench along the border.
2. Line with non-woven geotextile fabric (prevents silt clogging).
3. Fill with ¾″ clean washed drain rock.
4. Wrap fabric over top, cover with 2″ soil/turf.
5. Ensure the trench daylights to a lower area or dry well.

When to Call a Pro

If the yard slopes toward the pool, or if the “border” is actually a code-required barrier (e.g., for drainage setbacks), hire a local landscape contractor. They’ll verify grades, install proper swales, and ensure compliance—saving you from costly rework.