Description
The 20″ Big Blue 1 Micron Sediment Filter delivers extremely fine particle filtration for whole-home systems where sediment levels are low to moderate—but precision filtration is critical. Designed for high-flow applications, this Big Blue cartridge removes particles as small as 1 micron, helping protect sensitive downstream equipment and improve overall water clarity.
Ideal for homes with finer sediment issues or as part of multi-stage filtration ahead of softeners, carbon filters, and UV systems.
Key Features
- 1 Micron Filtration — Captures ultra-fine particles such as silt, fine sand, rust, and sediment that larger filters miss
- Big Blue Capacity — Large 4.5″ diameter × 20″ cartridge supports high flow with minimal pressure drop
- High Dirt-Holding Surface — Extended surface area for longer life compared to smaller filters
- Polypropylene Construction — Chemically inert, safe for potable water and resistant to most common water contaminants
- Protects Downstream Systems — Keeps softeners, carbon filters, reverse osmosis membranes, and UV chambers cleaner longer
Compatibility
The 20″ Big Blue 1 Micron Sediment Filter is compatible with:
- 20″ Big Blue filter housings (standard 4.5″ × 20″)
- Whole-home point-of-entry systems
- Pre-filtration ahead of UV disinfection systems
- Pre-softener and pre-carbon filtration setups
⚠️ Not suitable for slim-line (2.5″ diameter) housings.
Specifications
Filter Size – 4.5″ × 20″ (Big Blue)
Micron Rating – 1 micron
Media Type – Polypropylene depth media
Application – Ultra-fine sediment filtration
Operating Temperature – Standard cold water systems
Replacement Interval – Typically every 3–6 months (varies with water quality)
Applications
This high-efficiency filter is ideal for:
- Whole-home sediment filtration
- Well water pre-treatment
- Pre-softener protection
- Pre-UV disinfection filtration
- Pre-carbon system filtration
- Homes with fine silt or mineral residue
When exceptionally clean water is desired, this 1-micron filter provides an extra layer of protection.
Maintenance & Replacement
To maintain optimal performance:
- Check filter condition monthly — inspect for discolouration or flow reduction
- Replace cartridge when flow slows or visibly dirty — typically every 3–6 months depending on water quality
- Depressurize filter housing before service — turn off water and release pressure before changing the filter
- Match with pre-filters — pairing with a coarse sediment pre-filter can extend life
Regular replacement helps maintain pressure, protect downstream equipment, and ensure consistently clear water.
Why Choose a 1 Micron Filter?
✔ Captures ultra-fine sediment particles
✔ Improves water clarity and taste
✔ Protects sensitive components like RO membranes and UV systems
✔ Supports whole-home high-quality filtration
✔ Maintains strong flow with Big Blue capacity
The 20″ Big Blue 1 Micron Sediment Filter is an excellent choice for homeowners who want ultra-fine sediment removal and robust protection for their entire water treatment system.

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