Whole House Mains Water Chemical Filter 20"x4.5" Big Blue Sediment + Chlorine Filters
Superb whole of house mains water chemical filter for the removal of fine sediment, chlorine and a range of other impurities in water
WaterMark Certification Number (if applicable): 023247
✅ Available with 1" BSP inlet & outlet ports
✅ Integrated pressure release valve
⚠️ Protective cover not included which you can purchase in link Protective Cover – Whole House Water Filter 20" x 4.5"
Images 1–2: WaterMark certified systems
Images 3–5: Non-certified systems
This twin big blue cartridge filter system is ideal for whole-home chemical water filtration. The package includes:
- 1x spun sediment filter
- 1x coconut shell carbon block filter (as selected)
- 1x mounting bracket
- 1x housing opening spanner
Compatible with all standard 20" x 4.5" water filter cartridges, the housings come with 1" BSP ports and built-in pressure release valves.
All components in contact with water are made from BPA-free, food-grade plastics, ensuring safety and durability.
Filter Lifespan and Performance
- Standard filters: Approx. 6–12 months or up to 100,000 litres
- High volume catalytic carbon filters: Up to 350,000 litres
Filtration Details
1st Stage – Poly-Spun Sediment Filter
Removes larger particles such as dirt, dust, clay, leaves, and suspended solids.
2nd Stage – Coconut Shell Activated Carbon Block Filter
Reduces chlorine, odours, colouration, taste issues, pesticides, herbicides, VOCs, and a broad spectrum of impurities.
0.5 micron filters effectively remove cysts and micro-organisms like Giardia, Cryptosporidium, and Blastocystis.
Filter Dimensions:
- Sediment filter: Approx. 51cm x 12cm
- Carbon block filter: Approx. 50cm x 12cm
WaterMark Certification Guidelines
Available in WaterMark certified or non-certified housings (as selected).
For systems connected directly to mains water under continuous pressure, Australian Standards require:
- WaterMark-certified housings
- A certified pressure-reducing valve (PRV)
- Backflow prevention device
These components are not included, as they are commonly installed in household plumbing.
Certification is not typically required for off-grid or non-mains water setups.
Additional Information
Images 11–16 showcase related products available in our store
12-month warranty on all components included with the original purchase
30-day money-back guarantee – return for a full refund or replacement
Please note: Regulatory standards require any system under constant pressure to comply with AS3497, including PRV and backflow protection—regardless of brand or supplier.
Why Choose Whole House Mains Water Chemical Filter?
The Whole House Mains Water Chemical Filter is designed to provide your entire home with access to clean, safe water. This filter effectively removes chlorine and sediment, which are common contaminants in mains water. By installing this filter, you ensure that every tap in your home dispenses purified water, so you can enjoy fresh drinking water and better tasting food without harmful chemicals.
Effective Sediment and Chlorine Removal
This filter's 20"x4.5" Big Blue design makes it a robust choice for sediment filtration. It captures dirt, rust, and other solids, thereby preventing them from clogging your plumbing. Moreover, it effectively reduces chlorine, which is often used in municipal water treatment. Because chlorine can affect the taste and odour of your water, removing it promotes a healthier, more enjoyable drinking experience.
Easy Installation and Maintenance
Installing the Whole House Mains Water Chemical Filter is straightforward, making it a practical choice for homeowners. The filter is compatible with standard plumbing fixtures, so setup is quick and hassle-free. Additionally, regular maintenance is easy; simply replace the filter cartridges as needed to ensure continuous purification. This convenient upkeep means you can have peace of mind knowing your family is drinking clean water without interruptions.
