A U.S. gallon is equal to 8 pints, or 128 ounces of liquid. Most water filtration systems are designed to filter hundreds of thousands of gallons as long as filter cartridges are changed periodically based on filter life.  Fun Fact: Because a “pint” is measured differently in the U.K. and the U.S., a gallon in the U.K. is actually about 0.7 liters heavier than a gallon in the US.  Because we use U.S. measurement, one gallon is equal to 231 cubic inches or 3.785 L.


A parasitic microorganism that can wreak havoc on the intestines. In mild cases, symptoms include severe abdominal cramping and last between 2-6 weeks, and an infected individual can remain a carrier and transmit it to others. When Giardiasis is contracted, malabsorption in the small intestine can be a result. If you’re a “New Girl” fan you might have heard Nick mention Giardia as the diagnosis after Jess eats a bite of dead fish found in a questionable river (Season 3 Episode 10 if you’re interested). In real life though, Giardia is no laughing matter.

Global Warming

Scientists have noted a gradual increase in the overall temperature of the Earth’s atmosphere over time. This phenomenon is often attributed to the greenhouse gas effect, which is considered to be caused by carbon dioxide, chlorofluorocarbons, and other human pollutants.   Global warming is also linked to other earthly effects such as drought, melting glaciers, forest fires, and more.

Granular Activated Carbon

Granular Activated Carbon uses granules larger than 1mm in size of activated carbon/charcoal which allows them to diffuse more rapidly.  In water filtration this equates to greater water pressure.

Ground Water

The term ground water refers to water that is beneath the surface of the ground, this is often the source of water in springs and wells.

Terms You Should Know

  • Raw Water

    When water is called “raw” it is untreated – simply meaning no removal of contaminants, bacteria, parasites, etc.  A common new trend in the US, drinking raw water... Raw Water

  • Algal Bloom

    When an algae population grows rapidly, causing the water to be discolored, it is called an algal bloom. Some algal blooms produce toxins, while non-toxic blooms can be just... Algal Bloom

  • NSF International

    NSF International is actually not an abbreviation, but a stand-alone term. While NSF used to stand for National Sanitation Foundation, it was officially changed to... NSF International

  • Point Of Use Filter

    A point of use, or POU, filter purifies water at the point where water is actually used. Whether at your kitchen faucet, a refrigerator dispenser, or your shower head, a... Point Of Use Filter

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