1. Structural Damage:
Pools rely on the weight of the water to counteract external pressure from the surrounding soil. Without water, the pool shell may crack, or in severe cases, the pool could shift or “pop out” of the ground due to hydrostatic pressure.
2. Liner Shrinkage or Damage:
In vinyl-lined pools, an empty pool can cause the liner to shrink, wrinkle, or tear, leading to expensive replacements.
3. Foundation and Soil Pressure:
Without the water, the walls and floor of the pool are more susceptible to stress caused by shifting soil or ground pressure, especially in areas with high water tables.
4. Increased Debris and Algae Growth:
An empty pool may collect debris, and stagnant water from rain or groundwater can encourage algae growth.
When Draining a Pool May Be Necessary
If you need to drain your pool for repairs or deep cleaning, consult with a professional to ensure it’s done correctly. In some cases:
Lower water levels incrementally to avoid structural stress.
Use a hydrostatic relief valve to prevent pressure from groundwater.
Time the draining to avoid rainy seasons or high groundwater levels