3 Reasons Not to Drain a Vinyl Liner Pool Completely

The water holds the liner in place Draining the pool removes the weight that keeps the vinyl liner pressed against the walls and floor. Without it, the liner can shift, wrinkle, or tear loose from the coping.

Groundwater can push the liner up If you empty the pool, groundwater pressure from below can lift the liner, creating bubbles or requiring a full replacement. This is especially risky in wet soil conditions.

Old liners may not survive going dry A brittle or aged liner can crack or fail under the stress of being drained. Unless you are prepared to buy a new liner, leave the water in and call a professional for major repairs.