Pool Equipment & Cleaning

What Is Pool Filtration?

Pool filtration removes suspended particles by passing water through a filter medium.

Pool Filtration schematic with components and arrows showing the water path. — Simplified educational schematic. Teal arrows show water direction; shapes and connections vary by model. Not an installation guide.

How It Works

Common pool filters use cartridges, sand, or diatomaceous earth. Filtration physically captures particles; sanitizers control microorganisms. Clear-looking water is not proof of safe water chemistry.

Related terms

Cartridge Filter
Diatomaceous Earth Filter
Sand Filter

Learn more

Sand vs cartridge pool filter
Weekly Pool Maintenance Checklist

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