Best Under Sink Water Filters in Singapore

The 5 Best Under Sink Water Filters in Singapore

The best under sink water filters in Singapore can help you save a huge amount of money by freeing you from dependence on traditional water delivery services. They make it possible to have access to clean and fresh water at any time of the day.

In this guide, you will learn everything about the best under sink water filters in Singapore. We’ll go through the top options sold on the island and help you decide which is the right one for your home.

We’ll also cover some of the most commonly asked questions about water filters and reverse osmosis filtration systems. With all of that, we’re confident that our guide will help you find the perfect under sink water filter that your home needs!

How to Pick the Best Under Sink Water Filters in Singapore

As you start searching for the best under sink water filters in Singapore, you’ll soon realise that it’s a lengthy process that can get a little overwhelming sometimes.

Under sink water filters come in a wide variety of filtration options and a range of prices, so there are lots of factors to consider.

Here’s something that will make it easier for you to find the right under sink water filter for your home.

1. Know what needs to be filtered out of your water

As mentioned earlier, there are different types of under sink water filters sold in the market. Your choice will boil down to what contaminants and particles need to be flushed out of your home’s water system.

The most commonly used among households in Singapore are carbon filter, reverse osmosis (RO), and alkaline.

If you want to get rid of water’s chlorine taste, then a simple carbon filter will end all of your problems immediately. This type of filter will improve the odour and taste of the water.

On the other hand, removing dissolved particles such as sodium requires a more complex water filtration process like reverse osmosis. It’s a popular option because it can make sure that your drinking water is clean, fresh, and odour-free.

Meanwhile, alkaline is a type of filter that utilizes a process known as electrolysis. Water passes through electrically charged plates during the filtration process, separating water into two streams: one is acidic while the other is alkaline.

2. Look for something that’s easy install

Some under sink water filters are harder to install than the others. Most in-line filters only need a basic connection with an adapter, while UV systems and RO systems are more involved and usually need the help of a professional plumber.

A UV system needs an intricate electrical connection, while a reverse osmosis system requires a drain line connection for the rejected water.

It’s worth noting that most under sink water filters require a faucet connection, regardless of how complicated they are to install. Some of the best under sink water filters in Singapore connect directly to a primary faucet or soap dispenser, but others need a dedicated faucet.

3. Consider the maintenance needed

Most under sink water filters need to be replaced once a year, while their membranes last for at least two to three years. If you have poor water quality at home, expect your water filter to have a short lifespan.

If the water contains large amounts of debris and dirt, the filter will reach its full capacity quickly. In this case, you need to replace the filter regularly if it easily clogs… even if you just installed it two months ago.

4. Check the cost of filter replacements

Compared to a whole-house water filtration system, the filters of under sink water filters are significantly cheaper.

However, the need to replace your filters can come more often than expected, especially for those who have poor water quality at home. It’s best to save for replacements to ensure that you always have clean drinking water at home.

Benefits of the Best Under Sink Water Filters in Singapore

Regardless of their type, the best under sink water filters in Singapore have a lot of benefits to bring to any household. It’s no surprise that more and more households in Singapore are dropping water delivery services for water filters.

Let’s go over some of them:

1. Improved water taste

Most tap water has an unpleasant smell or taste, but under sink water filters can flush that out, providing cleaner and fresher drinking water.

The best under sink water filters in Singapore can remove chlorine, fluoride, dirt, and debris that affect how tap water tastes.

2. Safer water to drink

Aside from getting rid of your tap water’s foul smell and odor, under sink water filters can remove a lot of potentially harmful chemicals and contaminants from your drink.

You no longer have to worry about whether or not you’re consuming particles that can be toxic for you and your family. It’s one of the reasons more people are getting their hands on the under sink water filters.

3. Can improve physical development of kids

If you live with children, it’s important to always have clean and fresh drinking water at home. Drinking unhealthy and dirty water can negatively affect the growth of children, stunt their physical growth even.

Some children also get discouraged from drinking water if it has an unpleasant smell and taste. We need to give them reasons to drink more water to meet what their body needs to grow.

4. Cost-efficient

Finally, there’s a huge amount of money that can be saved by ditching water delivery services, bottled water, faucet filters, and freezer filters for the best under sink water filters in Singapore.

If you need to shell out a huge sum of money for a water filter, the price you pay for it gets compensated by its monetary benefits more quickly than imagined.

The Best Under Sink Water Filters in Singapore

Now that you know more about under sink water filters, it’s time to jump right ahead to our picks for the best under sink water filters in Singapore.

1.   2 Stage Under Sink Drinking Water Filter System

2 Stage Under Sink Drinking Water Filter System
BEST FEATUREHigh-quality water filtration
TYPECarbon water filter
MATERIALSFood-grade PET materials
SIZE25.4 centimetres

Get it now from Shopee

If you’re looking for an efficient under sink filter without the heavy price tag, then look no further than the 2 Stage Under Sink Drinking Water Filter System. It’s a high-quality water filter that costs a little over S$40.

It may be a budget-friendly under sink water filter, but it gets the job done well. It can flush away rust, sediments, colloids, suspended solids, and other coarse debris out of your drinking water without a complex water filtration system.

You no longer have to suffer through unpleasant-tasting water because it has an activated carbon absorption system that removes chlorine, fluorine, foul odour, and other substances. It also doesn’t rely on electricity, so the tap water pressure alone is enough.

Most of its customers love how easy it is to mount on the wall, removing the need to hire the services of a professional plumber. One user even noted that he was able to finish installing it in less than 30 minutes.

Every filter has a lifespan of 3 to 6 months, depending on the quality of water you have at home. It can be extended if you have cleaner and clearer water at home, but it’s ideal to be prepared by having replacement filters at all times.


  • Competitive price
  • Comes with 2-stage filters
  • Easy to install
  • Perfect for all types of homes
  • Comes with a sealing ring to avoid leaks and explosion


  • Shorter lifespan compared to other models
  • No warranty

2.   PureDrop F3-CUW4

PureDrop F3-CUW4 Water Filter
BEST FEATURE3-stage replacement water filters
TYPECarbon water filter
MATERIALSHigh-grade plastic
SIZE25 centimetres

Get it now from Amazon

The PureDrop F3-CUW4 is a three-stage water filtration system that includes a carbon block filter, PP sediment filter, and ultra micron granular carbon filter.

It may look complicated on the surface due to the multiple stages, but it’s designed to reduce installation time significantly. It comes with an easy-to-follow instruction manual that guides customers on how to install the water filter system on their own.

Its three stages make it possible to sift out all the potentially harmful substances found in most tap water, down to the smallest particles. It can get rid of sediment, rust, colloids, fluoride, and chlorine.

In terms of filter lifespan, it’s estimated that each filter can last up to 12 months, but it mainly depends on the quality of water you have at home. Its manufacturers made sure that it won’t go anywhere below 7 months, which is more than the average for a carbon water filter.

One of the best things about it would have to be its lifetime technical support. This is where customers can ask for help in case they’re having trouble with their PureDrop F3-CUW4.


  • A 3-stage water filtration system
  • 7-12 months of filter lifespan
  • Easy to install
  • All filters comply strictly with NSF/ANSI standards


  • Durability is questionable
  • No membrane included

3.   PUCRT 100GPD

PUCRT 100GPD Water Filter
BEST FEATUREMade with high-quality materials
TYPEReverse osmosis
MATERIALS100% lead-free stainless faucet, 3.2 plastic pressure tank, plus food grade tubing
DIMENSIONS40.64 x 37.46 x 35.56 centimetres

Get it now from Amazon

If you’re after a more complex water filtration system, you’d want to take a look at the PUCRT 100GPD. It’s a five-stage under sink water filter that uses the reverse osmosis system.

It comes with five types of filters that can flush away up to 99% of a thousand types of sediments and contaminants, such as lead, sodium, chlorine, fluoride, asbestos, calcium, arsenic, and hormones.

It’s also one of the under sink water filters that work well with both tap and well water. In fact, it can be used as an ice maker water supply or as an aquarium tank water supplier.

Installing it won’t cause any inconvenience because all fittings and parts are for quick connection, so there’s no need to use wrenches and other tools. We tried to install it ourselves and we did everything in less than an hour!

The PUCRT 100GPD boasts a compact and small design, so no worries about it consuming a lot of space in your kitchen. It’s way smaller than other under sink water filters with a reverse osmosis system.


  • A 5-stage water filtration system
  • Can remove 1000 types of sediments and contaminants
  • Easy to install
  • Compact build, so it won’t eat up a huge kitchen space


  • Expensive
  • Pricey delivery fee
  • No warranty

4.   novita Under Sink Drinking Filtration System

novita Under Sink Drinking Filtration System
BEST FEATUREFilter replacement timer
TYPECarbon filter
MATERIALSFood-grade PET materials
DIMENSIONS22.4 x 8.9 x 25.8 centimetres

Get it now from Shopee

The novita Under Sink Drinking Filtration System is a three-stage water filter system that comes with either a HydroPlus® Filter or HydroPure™ Filter. It’s a compact and functional under sink water filter system that can be installed on your own.

When it comes to its filters, customers can choose between HydroPlus Filter or HydroPure Filter. HydroPlus produces neutralised alkaline water, while HydroPure creates dechlorinated purified drinking water free of heavy metal ions.

After the water goes through either the HydroPlus Filter or HydroPure Filter, which is the first stage, it moves on to the carbon filter and membrane filter. This is where bacteria and other contaminants are removed while it’s being deodorised to improve its taste and colour.

It’s an under sink water system that can be used for drinking, cleaning, rinsing, and cooking, making it an all-around water filter system. It helps in saving money too, as it doesn’t require electricity to operate.

It features a hassle-free DIY replacement concept that allows users to do everything on their own, from installation down to replacement. All you have to do is twist to remove the used-up filters and then do the same to install a new filter set.

It even comes with a filter replacement timer that alerts users if it’s the right time to replace the filters, ensuring that they always have access to clean and fresh water. It’s one of the reasons it’s considered one of the best under sink water filters in Singapore.


  • Comprehensive three-stage filtration system.
  • Easy to install and replace
  • No electricity required
  • Has a filter replacement timer


  • Expensive
  • Ideal only for large kitchens

5.   iSpring RCC7AK

iSpring RCC7AK Water Filter
BEST FEATUREA 6-stage water filtration system
TYPEReverse osmosis
MATERIALSFood-grade plastic
DIMENSIONS38.1 x 20.32 x 45.72 cm

Get it now from Amazon

For those who are willing to go above their budget for an advanced water filter, we recommend checking out the iSpring RCC7AK. It’s the only water filter with an Alkaline Remineralization stage that restores the mineral balance and natural alkalinity of the water.

The iSpring RCC7AK is known for having some of the most durable filters in the industry. Its three pre-filters are a PP sediment filter, carbon KDF, and carbon block filter, which remove large contaminants and debris

After the pre-filters come the reliable and safe Reverse Osmosis (RO) water filtration system that cleans and purifies tap water. It can remove 99% of over 1,000 harmful contaminants, including asbestos, calcium, sodium, and more.

The Fine GAC filter is the second-to-the-last stage where water gets “polished” before the Alkaline Remineralization stage, producing fresh, safe, and healthy drinking water.

When it comes to installation, the iSpring RCC7AK is designed for do-it-yourself installation that takes no more than an hour. It comes with a well-organised and clear instruction manual, on top of access to iSpring’s technical support.


  • A complex six-stage filtration system
  • With Alkaline Remineralization stage
  • DIY installation process


  • Least budget-friendly water filter
  • Can eat up huge space under your sink

FAQS about the Best Under Sink Water Filters in Singapore

If this is your first time looking for an under sink water filter, you probably have a lot of questions in your head. Well, we’re here to answer some of the most pressing questions about under sink water filters.

Anyway, that’s it for our list of the best under sink water filters in Singapore. If you’ve used any of these water filter systems in the past, share your experience with them!

For more options, we recommend checking out our list of the best water filters in Singapore. We included different types of water filters in there to fit the different budgets of customers.