What is the main purpose of a pool filtration system?

The main purpose of a pool filtration system is to remove impurities from the water. This process is essential for keeping the pool clean and safe for users. The filtration system works by drawing water from the pool, passing it through a filter that captures dirt, debris, and other contaminants, and then circulating the clean water back into the pool.

While circulation of water is closely related, it is a function of the filtration system rather than its primary purpose. Maintaining alkalinity and heating the pool are also important aspects of pool maintenance, but they do not relate directly to the filtration system's role. The focus on impurity removal reinforces the importance of water quality in any swimming pool environment, ensuring safety and comfort for everyone who uses it.