Why is the water level in the pool dropping?

Mark Toth

Owning a pool is a source of joy, relaxation, and recreation. But encountering unexpected issues, such as a sinking water surface, can be concerning. In this comprehensive blog post, we will explore the common causes of a sinking water surface in your pool, help you understand the factors involved, and provide practical solutions to manage and prevent this problem.

Evaporation: the invisible culprit

One of the most common causes of a sinking water surface in your pool is evaporation. Evaporation is a natural process where water turns into vapor and rises into the atmosphere. Pools, being large bodies of water, are susceptible to evaporation, especially in hot and dry climates. Although evaporation is unavoidable, it is crucial to understand its role in water loss.

Solution: Regularly refill your pool with fresh water to counteract the effects of evaporation. Use a hose or automatic filling device to keep the water level within the recommended range.

Climate and weather conditions

Environmental factors play a significant role in the evaporation of pool water. High temperatures, low humidity, and windy conditions accelerate the evaporation process. If you live in an area with a hot and dry climate or experience long periods of heat, the risk of rapid water loss is higher.

Solution: Adjust your water maintenance routine based on weather conditions. During hot and dry periods, closely monitor the water level and increase the frequency of refills.

Leaks: the silent culprit

Undetected leaks are a major contributing factor to a sinking pool surface. Leaks can occur in various parts of the pool, including pipes, the pool shell, and around fittings and accessories. Quick identification and repair of leaks are essential to prevent water loss and potential damage.

Solution: Conduct a thorough inspection of your pool for visible signs of a leak, such as damp areas around the pool, a constantly running pump, or a sudden drop in water level. If you suspect a leak, contact a professional pool service to perform a comprehensive leak test.

Splashing and water play

Activities in the pool, especially vigorous swimming, diving, or playing with water toys, can lead to splashing and water displacement. Over time, these activities contribute to a gradual reduction in water level.

Solution: It is important to enjoy your pool, but consider implementing rules to minimize excessive splashing. Also, be mindful of the water level and adjust it as needed after periods of increased activity.

Insufficient filtration and overflow

If your pool's filtration system is not functioning properly, or if the water level exceeds the pool's capacity, excess water can overflow. This overflow can give the false impression of a sinking water level.

Solution: Regularly check and maintain your pool's filtration system. Also, be aware of the pool's water capacity and ensure it is not exceeded during refilling.

Backwashing and cleaning measures

Backwashing, a process where the pool filter is cleaned in reverse order, can lead to water loss if not handled properly. Additionally, excessive backwashing or draining for cleaning purposes can contribute to a reduction in the water surface.

Solution: Follow the manufacturer's recommendations on how often to backwash and avoid unnecessary draining. If you need to lower the water level for cleaning, do so carefully and monitor the process closely.

Structural issues and settling

Over time, the ground around the pool can settle, causing gradual shifting of the pool's structure. This settling can cause the pool shell to sink slightly, resulting in a lower water level.

Solution: Regularly inspect the pool area for signs of settling or shifting. If you notice unevenness, contact a pool professional to assess and address the structural issues.

Incorrect water chemistry

Imbalances in water chemistry, such as high concentrations of dissolved solids (TDS), can lead to water loss. Elevated TDS levels can cause water to be drawn out of the pool in an attempt to equalize the concentration.

Solution: Regularly test and balance your pool water's chemistry. If TDS levels are consistently high, partial draining and dilution with fresh water may be necessary.

Conclusion

A sinking water surface in your pool can be caused by a range of factors, from natural causes like evaporation to more serious issues such as leaks and structural problems. Understanding the reasons behind water loss is the first step toward effective remediation.

Regular maintenance, attention, and prompt action are key to preventing and managing a sinking pool. By implementing a comprehensive pool care routine, monitoring environmental conditions, and immediately addressing any signs of leaks or structural problems, you can ensure that your pool remains a source of enjoyment, relaxation, and refreshment for many years to come. If in doubt, or if problems persist, it is always wise to consult a professional pool service to maintain your pool's integrity and resolve any underlying issues.

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