Why is pool evaporation important?
When evaporation occurs, only pure water leaves. This of course means the water left in the pool will have a higher TDS (total dissolved solids) reading and higher calcium hardness. This in turn affects the amount of balancing chemicals, chlorine, and filling water you need to continually put into your pool.
If the source water you're filling your pool with has metals or phosphates, that's another potential expense, since getting rid of metals and phosphates ends up costing money for labour and chemicals.
As warmer water evaporates from your pool, the total temperature drops as well. Reducing the amount of water that evaporates will naturally keep your water warmer.
When does evaporation occur most in your pool?
- When your pool has a large surface area
- When your water temperature is higher than the surrounding air
- When it's windy
- When it's humid
- When there's strong radiation from the sun
