What is “Point of Use” Water Treatment

Water purification system treating water at the point of use

What Does POU Stand For?

You’ve heard your neighbors talking about having a POU or POE installed in the home. So, what is POU and Poe? A POU is a “point of use” and POE is “point of entry”. Both are a water treatment system that purifies the water before it is consumed by your family. 

What is a point of use filter?

A point-of-use water treatment system water filters that reduce or remove waterborne contaminants and pathogens where the water is used, like at the faucet. As water flows through the filter, the harmful contaminants and pathogens are removed, improving the water quality.

While cities and municipalities treat the water before it reaches our homes, but is it as purified as possible? There are still chances of unwanted bacteria and microscopic things from the pipes that can taint the water. This is why many homeowners have started using a point-of-entry or a point of use water treatment system.  

Today, there are many different point-of-use water treatment technologies available, each having their own benefits and disadvantages. What are examples of point of use water treatment methods? The following are point-of-use water treatment examples that offer you an affordable water treatment: 


Point-of-entry and point of use water treatment systems both use activated carbon because of its effectiveness in removing various organic compounds such as: benzene, trichloroethylene, and assorted pesticides and petroleum-linked compounds. Both require easy and simple maintenance of changing out filter cartridges every 6 months. The activated carbon for point of use water treatment activated carbon comes in blocks or granular form. Some higher-end filters remove asbestos, lead, and some microbiological contaminants. 


Reverse osmosis, aka RO is a point-of-use water treatment unit that forces water in a chamber while under pressure. There is semipermeable membrane inside the chamber along with other filtration steps. Typically, a pre-filter is used RO water treatment system that captures larger particles, such as chlorine. Then a semipermeable membrane is in place that captures smaller contaminants. As water runs through activated charcoal, it fills a storage container. While there are point of entry RO water treatment systems, they are more common in point of use water treatment system that are located near any  water source, commonly the kitchen faucet. A RO system produces between three and ten gallons a daily and is predominantly used for cooking and drinking. 


Ultraviolet light point of use water treatment systems, aka UV light, have been around for a while in commercial use and have gained popularity in residential use. UV water treatment is completed by passing the water through a UV light source before it disperses from the tap. The UV light has a precise wavelength that kills most microbes found in drinking water. It effectively kills bacteria, cysts, fungi, protozoans, and viruses with the light’s intensity, strength, and the length of time light shines through the water.


This point of use water treatment system is perhaps the original and definitely the oldest water treatment method that effectively removes most chemicals, minerals, and bad tastes that frequently comes from tap water. A distillation water treatment system uses a heat system to convert water to vapor. It then feeds the vapor into a condenser where it is cooled and converted by to liquid.  Some distillation water treatment systems incorporate an activated charcoal filter that pulls more contaminants. The downside to this type of system is the small amount it produces each day. 

What is the most recommended point of use water filtration system? 

Here are six of the most recommended point of use water treatment systems, each available on Amazon: 

  • Best Overall:  APEC ROES-50 Reverse Osmosis System 

This point of use water treatment systems removes up to 1,000 different contaminants.

  • Best Faucet Attachment: PUR Faucet Water Filtration System n

This point of use water treatment system filter mounts to the existing faucet easy and without tools, will remove a lot of the common unwanted contaminants.

  • Best Whole-House System:  Aquasana Whole House Water Filter System With this point of use water treatment systems, every faucet in the house will be clean, drinkable water, including the shower and tub.
  • Best Small Pitcher: ZeroWater 7-Cup Water Filter Pitcher 

This point of use water treatment systems holds six cups and doesn’t take much space on the counter or in the refrigerator.

  • Best Large Pitcher: Brita 12-Cup Stream Filter Pitcher 

This water treatment system filters the water as it pours giving you immediate clear, tasty water.

  • Best Countertop Dispenser:  Pur Ultimate 18-Cup Water Filter Dispenser 

This point of use water treatment system is certified to remove 99% of lead and 22 other contaminants. 

a clear glass of filtered water


With a system of point of use water, disinfection is one thing you’ll know you’ve done the most you can for your family. If bottled water is your family’s go to, you’ll find this investment will safe money and the water is available for bathing and cooking as well as drinking.

If you want the protection that comes with point of use water treatment, give us a call at 800-633-8469 to get started.