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Our Water Filters


Our water filtration system has two main functions: 1) Remove harmful substances from the water and 2) Enrich the filtered water with natural alkaline minerals from precious stones.

Inside our alkaline water purifier, your water will go through a filtration​ process, with up to 15 stages. The number of filtration stages and water filters may vary depending on the type of alkaline water purifier bought

Our Filtration Process


Stage 1: Removal of harmful particles

​The 5-Micron Sediment Filter will remove any dirt, rust and sand particles in the water.


Stages 2 – 3: Removal of chlorine, organic chemicals, and particles

The two NSF ANSI 42-certified Carbon Block Filters will remove 99% of the chlorine and organic chemicals. They will also remove any dirt, rust, and sand particles that may be missed in Stage 1. This helps to reduce the foul taste, odour, and colour of your water. 


Stage 4: Removal of hard water contaminants and organic chemicals

The NSF ANSI 58-certified Reverse Osmosis Membrane will remove all the hard water contaminants that may be present in your water, including lead, copper, sodium, fluoride, nitrite, nitrate, and selenium. It achieves 100% of Fluoride removal. The membrane also filters out the organic chemicals that may be missed in Stage 2 as well as viruses and bacteria.


This Reverse Osmosis Membrane is the only certified filtration to remove Total Dissolved Solids (TDS), arsenic, and up to 0.0001 microns of particles. It is made out of a thin film composite (TFC) high-quality membrane that is capable of processing 80 gallons of water per day.


Stages 5 – 6: Infusion of antioxidant hydrogen and dissolved oxygen

The two Post Reverse Osmosis Carbon Filters will infuse the water with antioxidant hydrogen, dissolved hydrogen, and dissolved oxygen. Infrared ray energy will also break down the water molecules, creating smaller cluster size molecules to allow easier absorption of minerals into the body. The Post Reverse Osmosis Carbon Filters are made from high-quality bamboo and tourmaline stones.


Stages 7 – 12: Addition of alkaline minerals

The Organic Coral Mineral Alkalinity Filter further enriches the water by adding 72 different types of natural minerals from coral stones such as calcium, magnesium, sodium, potassium, iron, and zinc. These are essential minerals for the human body and act as antioxidants to improve immunity and overall health.


Stages 13 – 15: Addition of essential minerals

The Negative Ion Alkalinity Antioxidant Hydrogen Filter further adds essential minerals like calcium, iron, zinc, and magnesium into the water. These anti-bacterial filters are located inside the dispenser itself and contain high-quality negative ions balls, negative potential balls, tourmaline balls, and mineral stones.

Why Use Coral Pure Natural’s Water Filters?


Best alkaline water filters in Singapore: Our alkaline water filters offer the highest specifications in filtration (0.0001 microns), compared to our competitors. These filters eliminate 96% TDS which most of the water purifiers in the market cannot achieve. Only 5% of water purifiers have the USA NSF-58 certification for their 0.0001-micron water filters.


Essential alkaline minerals re-added: With alkaline water filters, Coral Pure Natural’s water filtration system in Singapore not only removes harmful substances from the water but also enriches the filtered water with natural alkaline minerals from precious stones. It is capable of removing up to 100% of fluoride in the water that you consume, compared to 10-20% of fluoride in other water purifiers. With the addition of the 72 minerals from coral stones such as calcium, magnesium, potassium, iron, and zinc, your body can continue to stay healthy, fight illnesses and develop better immunity.

Low maintenance costs: The filters in Coral Pure Natural’s water purifiers only need to be changed once every 12 months, depending on the individual filter. Our water purifiers can serve a larger number of people, delivering up to 10,000 litres of drinking water as well as 10,000 litres for washing and cooking.

Our Filter Capacity Vs Other Brands

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