Triple 20″ Big Blue Whole House Rainwater & Mains Water Filtration System

The Triple 20″ Big Blue Whole House Water Filtration System is a high-flow, three-stage water filtration solution designed for Australian homes, farms, rural properties and commercial applications using rainwater tanks or mains water supplies.

Featuring three premium 20″ × 4.5″ Big Blue filter housings, this system combines washable sediment filtration, activated carbon filtration and silver-impregnated carbon filtration to help improve water clarity, taste and odour throughout your property.

Installed on the main water supply, the system filters water before it reaches household taps, showers, hot water systems and appliances.

Its larger 20-inch cartridges provide increased filtration surface area compared with equivalent 10-inch systems, making it a practical choice for properties requiring higher water flow and comprehensive whole-house filtration.

Three-Stage Whole House Water Filtration

Stage 1 – 5-Micron Washable Sediment Filter

The first stage features a 20″ × 4.5″ 5-micron pleated washable sediment cartridge.

This filter helps capture:

• Dirt, sand and silt
• Rust and suspended sediment
• Particles commonly found in rainwater tanks
• Particulate matter entering household plumbing

Removing sediment at the first stage helps improve water clarity while reducing sediment build-up in the downstream carbon cartridges.

The washable pleated design allows the cartridge to be cleaned and reused according to the manufacturer’s instructions.

Stage 2 – 5-Micron Carbon Block Filter

The second stage features a 20″ × 4.5″ 5-micron activated carbon block cartridge.

Activated carbon helps reduce:

• Chlorine commonly found in mains water
• Unpleasant water tastes
• Unwanted odours
• Certain organic contaminants, depending on cartridge specifications

This additional filtration stage helps improve the taste and odour of household water while providing further particulate filtration.

Stage 3 – 5-Micron Silver-Impregnated Carbon Block Filter

The third stage features a 20″ × 4.5″ 5-micron silver-impregnated carbon block cartridge.

The activated carbon provides additional taste and odour filtration, while the silver impregnation offers bacteriostatic protection, helping inhibit bacterial growth within the filter media.

This final stage is particularly useful for selected rainwater and tank water filtration applications where additional carbon filtration is desired.

Key Features & Benefits

• Triple 20″ × 4.5″ Big Blue Filter Housings: Large-capacity housings designed for whole-house water filtration.
• Three-Stage Filtration: Combines washable sediment, activated carbon and silver-impregnated carbon filtration.
• 5-Micron Washable Sediment Cartridge: Helps capture dirt, rust, sand, silt and suspended particles.
• 5-Micron Carbon Block Cartridge: Helps reduce chlorine, unpleasant tastes and odours.
• 5-Micron Silver Carbon Block Cartridge: Provides additional carbon filtration with bacteriostatic protection within the filter media.
• Whole House Rainwater Filtration: Suitable for filtering stored rainwater before household distribution.
• Mains Water Filtration: Helps improve water clarity, taste and odour.
• High-Flow Design: Suitable for higher-demand applications, subject to cartridge flow ratings and operating conditions.
• Heavy-Duty Stainless Steel Mounting Bracket: Provides secure support for the filtration system.
• Three Pressure Gauges: Assist with monitoring water pressure through the filtration stages.
• Filter Housing Spanner Included: Helps with cartridge replacement and maintenance.

High-Flow Water Filtration

Big Blue filtration systems are designed for applications requiring greater water flow than smaller residential filter housings.

Suitably configured systems may accommodate flow rates of up to 150 litres per minute. However, the actual flow rate of this triple-stage system depends on the installed cartridges, incoming pressure, pipework and water conditions.

The three-stage arrangement provides a practical solution for properties requiring sediment and carbon filtration throughout the premises.

Ideal for Rainwater Tank Filtration

Rainwater collected from roofs and stored in tanks can contain dirt, sediment and organic matter.

The Triple 20″ Big Blue rainwater filtration system helps reduce suspended particles while providing additional activated carbon filtration to improve taste and odour.

Its three-stage design makes it suitable for properties wanting more comprehensive filtration than a single or twin cartridge system.

The system can also be installed before UV disinfection equipment as part of a broader rainwater treatment setup.

Recommended Applications

• Whole house rainwater filtration
• Rainwater tank filtration
• Mains water filtration
• Rural homes and farms
• Off-grid properties
• Residential and selected commercial applications
• Household sediment and carbon filtration
• Pre-filtration before UV disinfection
• Properties requiring larger-capacity filter cartridges

Rainwater & Mains Water Filtration

For rainwater supplies, the washable sediment cartridge helps capture suspended particles, while the two carbon stages provide additional filtration for taste and odour.

For mains water supplies, the system helps reduce sediment, chlorine, unpleasant tastes and odours.

The silver-impregnated carbon cartridge also helps inhibit bacterial growth within its filter media.

Important: This system does not include UV disinfection. Silver-impregnated carbon filtration is not a substitute for disinfection, and untreated rainwater intended for drinking may require additional treatment.

Why Buy From Aus Water Tanks?

Over 30 Years of Rainwater Industry Experience

With more than 30 years of experience in the Australian rainwater industry, Aus Water Tanks supplies practical water filtration solutions for homes, farms and businesses throughout Australia.

Our range includes whole house water filtration systems, rainwater filtration systems, reverse osmosis drinking water systems and replacement filter cartridges.

Quality Water Filtration at Competitive Prices

As a family-run Australian business, we focus on supplying quality filtration products at competitive prices.

Our experienced team can help customers choose filtration equipment suitable for their rainwater or mains water supply.

Complete Rainwater Solutions

Aus Water Tanks also supplies rainwater tanks, water pumps, filtration accessories and replacement filter cartridges.

We understand how rainwater storage, pumping and filtration equipment work together.

Australia-Wide Delivery

Aus Water Tanks supplies whole house rainwater filtration systems, mains water filters and replacement cartridges Australia-wide.

Contact our experienced team for product advice, availability and freight options.

Experience You Can Rely On

With over 30 years of water industry experience, Aus Water Tanks combines quality products, competitive pricing and practical filtration knowledge.

Shop Online and Save – Australia-Wide Delivery

www.auswatertanks.com.au