| Sand Filter | Approximately 20–40 μm under typical operating conditions | About 0.7 bar / 10 psi above the clean starting pressure | Backwash, followed by a short rinse cycle | Commonly every 2–6 weeks, depending on debris load and water conditions | Good; usually the least fine of the three options | Simple operation, durable media, easy backwashing, and no disposable cartridge required | Lower fine-particle capture; uses water during backwashing and requires a larger installation footprint | Large residential pools, public pools, and installations where low-maintenance cleaning is important |
| Cartridge Filter | Approximately 10–15 μm with a clean, properly sized cartridge | About 0.35–0.50 bar / 5–7 psi above the clean starting pressure | Remove the cartridge and rinse pleats with a hose; periodic deep cleaning may be required | Usually every 1–3 months, depending on pool use and contamination | Very good; captures finer particles than standard sand filtration | Lower water consumption, compact design, and no backwash line required | Manual cleaning is required; cartridges eventually need replacement | Residential pools with water-use restrictions or limited equipment-room space |
| D.E. Filter | Approximately 2–5 μm when correctly charged with filter-grade diatomaceous earth | About 0.7 bar / 10 psi above the clean starting pressure | Backwash or internal cleaning, followed by replacement of the D.E. powder | Often every 1–3 months, or whenever the pressure-rise limit is reached | Excellent; generally the finest filtration among common pool filter types | Strong fine-particle removal and high potential for visibly clear water | Higher maintenance complexity, powder handling, and disposal requirements | Pools prioritizing maximum clarity, including high-use residential or commercial settings |