Fixing Underground Pool Leaks

Leak Detection Methods

Underground leaks require systematic detection before repair. This guide covers professional techniques for finding and fixing hidden leaks.

Step 1: Confirm a Leak Exists

Perform bucket test to verify water loss exceeds normal evaporation (1/4 inch per day).

Step 2: Pressure Test Lines

Isolate and pressure test each plumbing line to identify which line is leaking.

Step 3: Locate Exact Leak Position

Use electronic leak detection equipment or listen for water sounds to pinpoint leak location.

Step 4: Excavate Carefully

Dig carefully around suspected leak area. Support surrounding pipes to prevent additional damage.

Step 5: Repair the Leak

Cut out damaged section and install new PVC pipe using proper primer and glue technique. Allow adequate cure time.

Step 6: Pressure Test Repair

Test repaired section before backfilling to ensure leak is fixed.