4 Stage Reverse Osmosis Under Sink Water Filter System

This is a 4 stage reverse osmosis water filter system, which consists of a sediment cartridge to remove any dirt, lumps & bumps or sediments from the water. The water then flows through a carbon block cartridge to remove the chlorine & chemicals from the water before the water flows through the RO Membrane. It is the RO membrane that is the heart & soul of any RO system. The RO membrane splits the water so you will find that as 1 litre of contaminant-free pure water is stored in the holding tank, at the same time 1 litre of contaminated waste water will go down the drain to waste.

The RO membrane is a very good way to remove fluoride, heavy metals, and PFAS from the water.

Effective PFAS Reduction

Our reverse osmosis (RO) systems are designed to effectively reduce harmful contaminants, including PFAS. According to the US Environmental Protection Agency (EPA), properly maintained RO devices can eliminate up to 99.9% of PFOA. The reason RO systems are so effective is that they have a carbon filter first, then the membrane, and another carbon filter at the end, providing you with cleaner, safer water for your family.

Water supplied to most homes in cities & towns across Australia will have a pH level around the 7 to 7.5pH level which is alkaline, once the water flows through the membrane and all the minerals are stripped out of the water the pH level will drop to around the 6pH mark which is acidic and we do not recommend anyone drinks water with a pH level under 7 for any extended period unless under the direction of a doctor or suitable professional.

If you are looking for a 4-stage RO system for drinking water, take a look at the HPF 4 Stage Reverse Osmosis Water Filter System with Low Alkaline which has a mineral/carbon cartridge in position 4, so the water can absorb the mineral which will elevate the water pH level up above the 7pH mark. 

Once the water flows out of the membrane it is stored in the tank. The tank is most commonly a 12-litre tank that pushes the water out through the carbon cartridge to polish the water up before use.

There are many uses for this reverse osmosis water filter. Still, for the best quality drinking water, we highly recommend you look at a reverse osmosis water filter that has some form of mineral available to dissolve into the water after the reverse osmosis filtration process removes all the minerals and the pH plummets. A simple alkaliser or remineraliser cartridge containing minerals is highly recommended as used in the HPF 4 Stage Reverse Osmosis Water Filter System with Low Alkaline.

How to Install your Reverse Osmosis System

Before Buying this Product:

This product is not recommended for Rain Water Filtration because of the Waste Water Component.
Reverse Osmosis water filters require mains water pressure as supplied to towns & cities or a pressure pump with 40 psi of pressure.

My Water Filter® doesn't Recommend RO for Rain Water Filtration

Production Rate - 50 GPD under the following conditions:

• 100psi

• Nominal rejection rate 96%

• 500 PPM TDS

• TFC Membrane

• Water temperature 21 °C

Technical data:

• Maximum temperature 40°C

• Maximum pressure 700kpa

4-Stage Filtration

Stage1: 5 micron PP Sediment Filter Cartridge

Removes suspended matter such as silt, rust sand, algae, sediment, scale particles, dirt and cloudiness from the water.

Stage 2: Carbon Block Filter Cartridge 

Removes herbicides, pesticides, chlorine, chlorine by-products and organic chemicals to protect the membrane.

Stage 3: 50 gallons per day RO Membrane

Removes 98% of impurities including the organic and inorganic chemicals. Such as FLUORIDE!!!

Stage 4: Inline Granular Activated Carbon (GAC) Filter Cartridge

Polishes the water and removes any taste or odour water may have picked up while sitting in the tank.

Kit Includes

• Standard faucet and plastic mounting

• PE Tube 5 mtrs

• Feed water adaptor set

• 3.2-gallon Metal tank (white)

Applicable for running water or underground water. Input Water Pressure: 50~60 PSI. R.O. Output: 50 GPD.

Performance Data

• Aluminium 98%

• Chlorine Over 98%

• Arsenic 98%

• Herbicides Over 98%

• Barium 95%

• Pesticides Over 98%

• Cadmium 95%

• DDT Over 98%

• Calcium 98%

• Endrin Over 98%

• Chloride 95%

• Lindane Over 98%

• Chromium III 98%

• Aldrin Over 98%

• Copper 98%

• Benzene Over 98%

• Fluoride 95%

• VOCs Over 98%

• Iron 98%

• Adrazin Over 98%

• Lead 98%

• Fluorathene Over 98%

• Magnesium 98%

• Phenol Over 98%

• Manganese 98%

• Trihalomethanes Over 98%

• Mercury II 85%

• Toxaphene Over 98%

• Nitrate 90%

• Dichloromethane Over 98%

• Potassium 95%

• Chloroform Over 98%

• Selenium IV 95%

• Trichlorethylene Over 98%

• Silver 98%

• Perchlorethylene Over 98%

• Sodium 95%

• Tannic Acids Over 98%

• Strontium 98%

• Methoxychlor Over 98%

• Sulfate 98%

• PCB Over 98%

• Zinc 98%

• Total Dissolved Solids 95%

• Asbestos 99% 

Advantages of a Metal Diaphragm Type Expansion Tank

• Metal shell has greater pressure resistance than plastic.

• Lower molecular porosity of metal eliminates air pressure loss.

• Diaphragm-type design assures stable water outflow.

Fully Disposable Cartridges

All My Water Filter® Cartridges are environment-friendly and safe to dispose of once a year!

Automatic Cartridge Replacement Service

When you invest in a water filtration product from My Water Filter®, we like to ensure you have the best experience possible. We like to lend a hand & take care of you as best we can.

• We happily monitor the cartridge life for you

• When the cartridge is due for renewal, we then contact you

• Once confirmed, we arrange everything and have a new replacement cartridge delivered to your door.

The My Water Filter® Difference

“We love our products and what we do so below are just some of the things we do to make a difference”  

Transform Lives Through Clean Water Access

At My Water Filter, our steadfast commitment goes beyond our customers and their families; we are dedicated to enhancing lives on a broader scale.

The core of our mission lies in leaving a legacy and making a meaningful difference in the world. With every purchase you make, we contribute 30 days' access to Life Saving Clean Water to those in need, acting as a catalyst for positive change.

We give water on your behalf through our enduring partnership with the Global Giving Initiative, Buy1GIVE1.

Your choice to support My Water Filter translates into tangible assistance for those in need, contributing to the collective effort to save lives. Thank you for being a crucial part of this journey and for enabling us to make a genuine impact, one purchase at a time.

We Give Together

When you buy a water filter or home water solution from My Water Filter®, at no extra cost to you, we give life changing drinking water to people in need on your behalf.

Bit by bit we make a difference together. Check out our Giving page here.

We also deliver our products for FREE and you get a 30-day money back guarantee. The product comes with free insurance too!

Free Delivery Australia-Wide
Our 10 Guarantees
30-Day Money Back Guarantee
12 Month Warranty