Drinking Water Filter 3-Stage Under Counter AQ-5300


The best performing water filter plus an increased capacity pre-filter

Instantly transform ordinary tap water into clean, extraordinary water.

NSF Certified Claryum® filtration technology independently tested and proven to remove over 97% of chlorine and chloramines. Also reduces:

    • Heavy metals like lead and mercury
    • Chlorine resistant cysts like giardia and cryptosporidium
    • Organic chemicals like herbicides, pesticides and VOCs
    • Pharmaceuticals like estrone and ibuprofen

4 in stock





How safe is tap water to drink?

Aquasana AQ 5300-3 stage filter is suitable to use with municipal water (tap water).

The water in Bangkok municipality is safe as the treatment facilities from which the water comes from has a World Health Organization benchmark for its quality and is carefully monitored. Water quality standards of MWA follow the Guidelines for Drinking-Water Quality of WHO (WHO, 2006). https://www.mwa.co.th/ewtadmin/ewt/mwa_internet_eng/ewt_news.php?nid=546&filename=index

Water quality standard of Nampapa Lao.  The standard of water produced by the factory is guaranteed and valid according to the authorization of the Department of Food and Drug and Mineral Industries according to WHO standards. In addition, our research laboratories have been monitored and reviewed in four main urban centres such as Mao Water Plumbing Plant, Water Treatment Plant, Cao Bang Khai Water Treatment Plant, Dong Kong Waterworks Factory, which is 98 points according to the Safe Water Plan. http://www.nampapalao.com/index.php?r=site/detail&id=287

Do i have to pay for a plumber to install the system?

Our under counter drinking water filter systems are very easy to install, and it only takes a few minutes to do if you have the right sink with a pre-drilled hole; no plumber is necessary. Just carefully follow the instructions and installation video.

How often do i have to replace cartridges and how much do they cost?

We recommend replacing the cartridges after six months or the specified gallon capacity to prevent the growth of bacteria in the system.  The AQ-5300 Three-Stage has a capacity of 2,270 Liters. The replacement cartridge is 3,720.00 THB

Is this purified water?

No, and actually, purified water is not as healthy as filtered water. Purified water undergoes reverse osmosis or distillation, which strip everything out of your water – not only the contaminants, but also the healthy, natural minerals. Our system uses selective filtration designed to reduce contaminants from the water and leave in the natural healthy minerals like calcium, potassium, and magnesium.

Does this filter gets rid of microplastic?

Although AQ 5300 is NSF Certified, the NSF independent certification standard does not yet offer a standard for microplastics filtration.

Municipal water treatment plants cannot remove all microplastics entirely. Most micro plastics are 2.5 microns in size.

The good news is that the AQ 5300 is equipped with two Claryum® carbon blocks that extrude down to 0.5 microns. This method is known as mechanical filtration and we use it specifically to remove suspended particles. We are not tested and certified for the microplastics removal but since our system is equipped with sub-micron technology, you can feel comfortable that we are reducing the microplastics significantly.

How do i recycle the replacement filters?

Aquasana USA can recycle the filters for you, but we do not cover the shipping cost to return the filters back to them. In reality, the environmental impact of shipping the filters back to them outweighs the good of recycling. To recycle the AQ-4035 drinking filters yourself, remove the ends of the filters, recycle the plastic parts (which are appropriately numbered) and put the carbon either in your compost pile or garden (carbon is good for plant life), or just throw it out (since the carbon degrades quickly, and is a positive component in a landfill).

I'm a renter, so i can't drill or modify the plumbing. Which filter system should i get?

To install an under counter system, you can remove the existing sprayer or soap dispenser on your sink and install our faucet in its place. This option will not damage or permanently modify your plumbing. When you move out, you can easily remove the system and reconnect your plumbing back to normal. If you do not have an existing hole in your sink from a sprayer or soap dispenser, we also have a countertop drinking water filter that conveniently screws on to most kitchen faucets or the Clean Water Machine Dispenser.

What is the size of the Brass T-fitting for Under Counter and Premium Under Counter unit?

The most common size is 3/8″ which originally comes with the system purchase. In rare cases some customers may need a 1/2″ T-fitting.

What size hole do i need in my sink for the Under Counter and Premium Under Counter systems?

The faucet that is included with our systems requires a 1/2″ hole.

What does TDS mean?

TDS is the acronym for Total Dissolved Solids, the amount of dissolved minerals and metals present in water. TDS meters tell you the concentration of dissolved minerals and metals, but are not an accurate measurement for contamination. Aquasana products reduce and remove harmful TDS like lead, but selectively retain or replace healthy dissolved solids like calcium, magnesium, and potassium.

What is BPA? And why are people concerned about it?

BPA stands for Bisphenol-A, a contaminant found in most plastics. BPA can adversely affect your health if consumed at high levels. Aquasana drinking systems do not contain BPA, and our filtration process reduces existing BPA.

Does having hard water mean it is contaminated?

Hard water is more of a nuisance than a health risk and is not necessarily contaminated. Hard water is generally safe to drink after it has been properly treated.

What is soft water, and is it safe to drink?

Having soft water just means you have a lower concentration of dissolved minerals in the water (primarily calcium and magnesium). Soft water does not mean clean water. Your water can be soft and still contain contaminants.

What is the selective filtration, and how do Aquasana systems filter drinking water?

Selective filtration is the process of sub-micron filtration, micron filtration, adsorption and ion exchange, all of which selectively reduces chemicals, heavy particulates and most dangerous heavy metals from the water while maintaining healthy minerals like calcium, magnesium and potassium.

What is the advantage of a 3-stage Under Counter system?

All of our drinking water systems use the same Aquasana Claryum® filtration technology. The 3-Stage system includes a 20-micron pre-filter before the two Aquasana Claryum® filters. This pre-filter increases the capacity of the system from 1,890 Liters to 2,270 Liters. In addition, it improves the flow rate in high sediment areas (Most suitable when having older piping).

I have an existing side faucet from a previous system. Can i use that with my new Aquasana water filter?

We recommend that you use the faucet provided. We have extensively tested the system with the faucets included. The faucets are NSF Certified to have no lead content. In addition, they will not impart any unwanted chemicals into your water. If you choose to use another faucet, we recommend that you have a plumber install the system to ensure no leakage occurs. We also recommend that you install an NSF Certified faucet to ensure the health benefits of your new Aquasana water filter.