20” Triple Whole House Rainwater Filtration (Medium/Large Home)

20" Triple Big Blue Filter System Bundle – Specially Designed for Rainwater

This 20" Triple Big Blue Filter System is purpose-built for tank water filtration, offering a complete three-stage setup ideal for homes, rural properties, baches, or off-grid living. Designed specifically for rainwater, it removes sediment, silt, organics, fine particles, odour, and unwanted taste — ensuring your harvested water is clear, fresh, and safe for everyday use.

What’s Included in the Bundle

1x 20" Triple Big Blue Jumbo Heavy Duty Filter Housing
1x 20" Polypleated 20 Micron Filter Cartridge
1x 20" Polyspun 1 Micron Filter Cartridge
1x 20" Carbon Block 5 Micron Filter Cartridge
Mounting bracket, spanner wrench, and four bolts

Product Description

This heavy-duty three-stage filter system is constructed from food-grade polypropylene and supports standard 20" x 4.5" cartridges. The first stage features a washable 20 micron pleated filter for capturing sediment, colour, and larger organic particles without restricting flow. The second stage’s 1 micron polyspun filter reduces fine particulates and helps protect against cysts like Giardia. The final stage features a 5 micron carbon block cartridge designed to enhance taste and reduce natural odours and organic compounds often present in roof-harvested rainwater.

With brass-threaded ports and pressure relief valves for each housing cap, this system is built for long-term, high-flow performance.

Key Features

Three-stage rainwater filter system using 20" x 4.5" jumbo cartridges
First stage 20 micron pleated filter removes large debris and colour
Second stage 1 micron polyspun filter captures fines and Giardia
Third stage 5 micron carbon block filter improves taste and reduces organic odours
Brass-threaded ports and food-grade polypropylene housings
Pressure relief valves for easy cartridge changes
Temperature range: 2°C to 37°C
Max working pressure: 125 psi
Includes mounting bracket, bolts, and spanner wrench

Why You Should Buy

Custom-designed for rainwater tank systems in New Zealand
Triple-stage system improves clarity, odour, and overall water quality
Washable pre-filter reduces maintenance and extends filter life
Prepares water for UV sterilisation where required
Perfect for homes, lifestyle blocks, and rain-fed drinking water setups

FAQs

Q: Is this system suitable for untreated roof water?
A: Yes – it’s designed to treat rainwater from tanks, improving clarity, taste, and odour before use.

Q: Do I still need a UV system?
A: Yes – this system is best used before UV disinfection for microbiological safety.

Q: Can I reuse any of the filters?
A: Yes – the 20 micron pleated filter is washable and reusable.

Q: What does the carbon filter remove in rainwater?
A: It reduces musty odours, earthy tastes, and organic compounds commonly found in roof runoff.

Q: What’s included?
A: Triple housing, 20 micron pleated filter, 1 micron polyspun filter, 5 micron carbon block filter, bracket, bolts, and spanner.