Category Archives: Filtration

A Low Cost Filtration System for Africa

Children collecting water

Two students at Penn State’s School of International Affairs developed a low-cost water filtration system which can be used in many parts of Africa. Kory Hansen and Jin Ju Kim are part of the school’s Humanitarian Engineering and Social Entrepreneurship (HESE) program. Their challenge was to use no more than 2 people and no more than $200 in just 2 days to create a water filter based on resources available in Africa.

When the students tested the filters on campus, it removed 99.9% of bacteria and would drastically help a communty’s water burden if the system could be recreated in Africa. Read More

Is Your Water Fluoridated? Ask Your Dentist!

When you visit your dentist, it's highly likely he knows if your water is fluoridated. Since America began fluoridating many municipal water supplies, dentists claim to see healthier teeth in their patients. In communities where water is not fluoridated, dentists can quickly pick out a non-native because these patients tend to have fewer fillings and less tooth decay.

The Centers for Disease Control and Prevention (CDC) has deemed fluoridation to be one of the top 10 greatest public health acheivments of the 20th Century. The EPA also has allowably safe levels of fluoride in the water to minmize the risk of fluoridosis. Read More

Is Your Tap Water Making You Sick?

We know that tap water in America is some of the best drinking water in the world. Many people in the world don't have easy access to any water, let alone have drinkable, healthy water coming from three or more faucets in their home at any time. While we are extremely fortunate, recent research indicates our wonderful water may be making us sick.



In the last twenty-five years, the number of children and adults with food allergies has sky rocketed. This is a growing concern for the general population, but only recently did researchers look into the link between the high use of environmental pesticides and water purifying chemicals. Read More

How Much Are You Paying for Tap Water?

At Fridge Filters, we're big fans of filtered water. We're not such big fans of disposable plastic water bottles. That's because water you buy at the store can cost anywhere from 50-2700 times more than filtered water from your faucet.

Say No to Water Coolers

Some supporters of bottled water may claim that their bottled water is from fresh mountain springs or secluded mineral wells on remote islands, however those claims may not be true. Recently, several businesses have been duped by water companies advertising "fresh, great-tasting spring water" when, in fact, it is merely municipal tap water. 


A plumbing company in Chicago recently filed a lawsuit against Nestlé Waters North America for this terrible lie in advertising. Read More

What Are Contaminants?

In water filtration, we use the word "contaminant" frequently. But what exactly does it mean? A contaminant is any one of a number of unwanted things in something. Food, drink, land, and filters are all things which can be contaminated.

Fresh tap water


Contaminants are vastly different which is why it is so difficult to make filters to remove all contaminants. There are also differing opinions regarding contaminants. Some people believe fluoride is a contaminant, while the EPA does not regard it as such. Because the opinions and beliefs are so varied, there are many filters available to help meet your needs. Read More

Food Allergies and Pesticides- Is There a Link?

By Megan Vick

You may have noticed lately that the number of people, especially children, with food allergies is increasing. With common allergens such as wheat, soy, peanuts, tree nuts, eggs, milk (and milk products), fish, and shellfish, you may wonder why so many people have allergies.


On December 3, 2012, the results of a study were released which tested the hypothesis that chemicals, specifically pesticides, in our drinking water may increase food allergies. The study did not find the two were linked. However, this same study did find (to no surprise) that both environmental pollution and food allergies are increasing in the USA. Read More

4396710 and 4396841 – Which Filter Do I Need?

By Megan Vick


Multiple times a day, our customer service team gets phone
calls regarding the PUR refrigerator water filter for Whirlpool/Kenmore. PUR
makes the filter for both Whirlpool and Kenmore brands and it does have many
product numbers. Both 4396710 and 4396841 will fit the same in your fridge, but
the performance may differ. Here is a quick way to help determine which filter
is right for you!



This is the “Advanced” filter for your model refrigerator.
This filter is slightly slower than its “Deluxe” counterpart, but it removes
more contaminants. It is also NSF tested and certified to meet or exceed NSF
standards 42 and 53. Read More

Rocket Fuel in My Water?!

By Megan Vick

That’s right.  You may have heard about it on the news or seen it online- 26 states have found perchlorate (rocket fuel) in their public water supply. Now the EPA is investigating setting a standard for allowable levels of this chemical in the water supply.

What is Perchlorate?
Perchlorate is derived from perchloric acid and can be both natural and artificial. The most common perchlorate is ammonium perchlorate which is used in pyrotechnics, as well as a component of rocket fuel. Perchlorate can cause numerous health problems both in children and adults.

Rocket Launch

Is Perchlorate in Other Things? Read More

Water Filters: A Boiled Down History


14,00,000,000 B.C.E.    The first molecules of water form in space after an early star explodes in a supernova (try filming that, Michael Bay.)



4,000,000,000 B.C.E.    Liquid water on planet Earth–IN YOUR FACE, NEPTUNE AND MARS!

2000 B.C.E.    Egyptians boil water and use crude sand and charcoal filters like, you know, Egyptians.




400 B.C.E.       Hippocrates designs a sleeve-like cloth filter. He uses his "water cure" to treat many diseases but sadly does not cure his baldness. 




500-1500 A.D.        Beer is the staple beverage of Europeans because the fermentation process naturally purifies water and they need more excuses to day-drink. 

1627    Sir Francis Bacon attempts seawater filtration. Read More

Charity Spotlight: Cary-Kildaire Rotary Club

By Megan Vick



In December, our Charity Spotlight was on the Rotary Foundation and Rotary International. In Cary, North Carolina, the Rotary Club of Cary-Kildaire collaborated with the Rotary Club of Mussoorie, India. These two clubs collaborated to provide sanitation and pure drinking water facilities to three schools in India. I was able to ask Scott Rossi a bit more about the completion of the project.

Fridge Filters:Scott, can you tell us more about the project and its completion?

Scott Rossi: The first phase of the ‘Purified Drinking Water System and Sanitary Facility Project’ undertaken by the clubs was dedicated to the students of MY Saraswati Shishu Vidya Mandir, Gandhi Niwas, Mussoorie on Monday, 27th June 2011. Read More