Why has my pool water level been the same for 21 days?

If your pool water level has remained the same for 21 days, it likely indicates that there are no significant leaks or evaporation occurring. Factors such as cooler weather, reduced pool usage, or a well-functioning pool cover can contribute to minimal water loss. Additionally, if you have a proper water balance and regular maintenance routines, that can help maintain a stable water level. To ensure everything is functioning properly, it's a good idea to regularly check for leaks and monitor your pool's water chemistry.