A pool filtration system is essential for maintaining clean and clear water in swimming pools. It works by circulating water through a filter that removes dirt, debris, and contaminants. The system typically includes a pump, filter, and sometimes a heater, ensuring that the water remains safe and pleasant for swimmers. There are different types of filters used in pool filtration systems, including sand filters, cartridge filters, and diatomaceous earth (DE) filters. Each type has its own advantages and maintenance requirements, but all serve the same purpose: to keep the pool water clean and healthy for users.