What is the primary purpose of pool filtration systems?

The primary purpose of pool filtration systems is to maintain water clarity and hygiene. Filtration systems are essential in removing both visible debris and microscopic contaminants from the water. This includes algae, bacteria, and other pollutants that can compromise the water quality and pose health risks to swimmers.

By effectively circulating and filtering the water, these systems ensure that contaminants are captured and that the water remains clean and safe for use. The filtration process works in conjunction with chemical treatments to achieve optimal water balance, but the filtration itself is what physically clears the water from particulates and harmful microorganisms.

The other options highlight important aspects of pool maintenance but do not represent the primary function of filtration systems. Heating the pool water is achieved through separate heating systems, adding chemicals is done for water treatment and balance, and while circulation is a function of some filtration systems, the main focus remains on clarity and hygiene.