How is pool water typically sanitized during winter?

Maintaining proper chlorine levels and ensuring the water does not freeze are critical for effective pool sanitation during winter. Even when the pool is not in regular use, it's essential to keep chlorine at the appropriate levels to prevent bacterial growth and algae formation. This ensures that the water remains clean and safe for when the pool is reopened.

Additionally, if the water freezes, it can lead to damage to the pool structure and equipment. Therefore, maintaining the water in a liquid state is vital, which may involve using a pool cover or employing heating methods to prevent freezing. Other methods like chlorinating solely on warm days or adding just algaecide do not provide comprehensive sanitation, while draining the pool completely could lead to various structural issues and deterioration. Hence, focusing on consistent sanitation and protection against freezing effectively safeguards the pool's condition during winter months.