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Why should I choose Pentair Everpure for water filtration?

Pentair Everpure has been delivering clean, clear and consistent water to businesses for over 80 years, and is a leading manufacturer of innovative, quality and reliable foodservice water treatment products, solutions and services.

Pentair Everpure is one of the most recognized water treatment brands in the foodservice industry, serving well-known companies and local businesses from multi-national quick service and fast casual restaurants, to convenience stores and coffee shops, to the local grocery store and cafe. Hundreds of thousands of operations around the globe trust us to provide them with high quality water.

Pentair Everpure products are tested and certified to the highest standards by NSF International, an independent non-for-profit organization that certifies and writes standards for food, water and consumer goods.

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Whom do I call for local support and training on installation and service of my Pentair Everpure filter system?

You should call Pentair Everpure Technical Service at 630.307.3000 or toll-free at 800.942.1153 (U.S. only). Our Technical Service Representatives will review your needs and put you in contact with a local Pentair Everpure field representative.

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Where can I purchase Pentair Everpure commercial products?

Click here to locate an Pentair Everpure Dealer or Master Distributor in your area.

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Why do cartridges plug up?

Our cartridges are designed to remove contaminants and particulates from the water. The cartridges will eventually plug as this material is removed, therefore, plugging indicates that the cartridges are working efficiently. If a cartridge plugs soon after installation, there are various things such as construction in your area or changes in reservoir levels that may alter the quality of your incoming water from day to day. This may produce low water pressure or excessive turbidity (i.e. large number of particles) in your water, which may cause the cartridges to plug prematurely.

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Why do cartridges have to be flushed?

All carbon-based filters need to be flushed to remove any excess carbon fines that are inside the cartridges. New cartridges are filled with air; therefore, flushing also removes the air from inside the cartridges and replaces it with water. The flush time is written on each cartridge's label. This process will allow any carbon-based cartridge to function at optimum levels without affecting any equipment that may be attached. Note: Be sure to shut off the flushing valve when finished.

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How can I prevent scale in my steamer?

Scale is caused when dissolved minerals, usually calcium and magnesium, are deposited as a white, flaky solid on to the heating elements of your steamer. This material acts as an insulator which increases energy usage. Over time, this can cause your equipment to fail altogether. Pentair Everpure offers several products designed to reduce or prevent scale formation. One product is the Pentair Everpure Kleensteam® system, which reduces scale buildup. Another alternative is the ScaleStick®. The ScaleStick contains a special Hydroblend™ that inhibits mineral scale deposits in low flow water-fed equipment. Our MRS line  of reverse osmosis products also remove minerals that cause scale. To determine how much mineral is in your water, it’s best to have your water tested.  

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Are your products NSF certified?

The majority of our cartridges are certified by NSF International. This certification means that the contaminant reduction claims certified are true and accurate, the materials of construction do not add anything unwanted into the water, that the system is structurally sound, and that advertising claims are true and accurate. This certification provides assurance to the user that the system has been independently evaluated to confirm its performance. The certification is displayed on the cartridge's label along with the claim(s); for example, chlorine reduction for 1,000 gallons. The majority of our certified products have been submitted for testing under NSF/ANSI Standards 53 and 42. For further information on NSF certification,  please contact Pentair Everpure Technical Service at 630.307.3000 or toll-free at 800.942.1153 (U.S. only). Certification information can also be located directly on the NSF website,

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How is Pentair Everpure treated water better than tap water?

  • Municipalities have a primary objective of ensuring safe water. They can use a variety of technologies, but most all use some form of disinfection, either chlorine or chloramines. Unfortunately, chlorinated water has a distinctive off-taste and smell.
  • While municipal water treatment plants do meet USEPA minimum requirements, they do not remove all contaminants nor do they filter for taste and odor.
  • Water always contains some dissolved mineral, and mineral is not removed by water treatment plants. This mineral causes hard scale in equipment that heats or freezes water, causing increased energy costs and reduced equipment life. Pentair Everpure offers products that reduce scale buildup.
  • As water travels from the treatment plant to your location, it can also pick up contaminants from older distribution piping systems.
  • Cysts are microbial living organisms (protozoans) that can be resistant to chlorine disinfection. Cysts have been known to cause health problems. Examples of cysts are Cryptosporidium and Giardia.
  • Not all water contaminants are bad, such as minerals, which Pentair Everpure filters do not remove. However, many contaminants such as chemicals, gases and particles can affect water's appearance, taste and smell. Some can even cause health problems.
  • Pentair Everpure removes chemicals like chlorine, along with dirt, rust particles, asbestos, small living organisms called cysts, and more, leaving you with crystal clear, clean and great-tasting water.

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How often do I have to delime my equipment?

Click here to download the PDF.

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How do I delime my equipment?

Click here to download the PDF.

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Why would I need a prefilter on my water treatment system?

Our quick-change filters remove contaminants as small as 0.5-micron by mechanical means (see individual system specification sheets for performance claims and FIFRA registration information). Microns are extremely tiny, in fact a human hair has the width of 40 microns. This means our filters are very effective at removing many contaminants. However, if your water is particularly dirty, we recommend placing a prefilter in front of your system. Prefilters are typically 10 to 25 microns, allowing them to remove the larger particles that might prematurely plug your system. Many of our systems offer a prefilter option.

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I have installed new cartridges. Why do my drinks still have an off taste?

Many things besides the quality of your water have an impact on the taste of your post-mix soda. If after checking all the items related to the filtration system and you are still concerned about the quality of your sodas, you should call your post-mix service personnel.

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How do I know if my water is treated with chloramines?

Some municipalities have migrated from using chlorine to chloramines. Chloramines is chlorine combined with a small amount of ammonia. The addition of the ammonia allows the disinfectant to stay in the water longer, for greater distances. Chloramines is more difficult to remove from water that chlorine, and requires filters with much more carbon. There are two ways to determine if your water has chloramines: 1) contact your local water utility company, or 2) have your water tested. By testing your water for Total Chlorine and Free Chlorine, we can determine if your water is being treated with chloramines. Our Everpure CLM and CB20 product lines are effective at removing chloramines.

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What should I do if there is a boil order in my area?

Click here to download boil order instructions. 

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Doesn’t my water softener treat my water?

Water softeners use an ion exchange process. Typically sodium chloride is exchanged for hard minerals like calcium and magnesium, which makes water “soft”. Hard minerals cause a hard scale on equipment that heats or freezes water, and this scale is difficult to remove, often requiring frequent delimings. Softener systems are usually comprised of a resin tank, where the ion exchange process takes place, and a brine tank where the salt solution is created. A softener can exchange other contaminants depending on the resin used, for example it can help remove iron from water. However, a softener does not filter the water, so many contaminants such as dirt, cysts and particles can pass through a softener resin bed. Learn more about water softeners. 

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What is the “milky” substance in my IMF bowl?

This is rare, but results from too much phosphate being released into the water. There are two possible causes of this:

  1. The water is too hot. Be sure that your bowl is not too close to another heat source.
  2. Water is extremely hard (has very high quantities of dissolved calcium and magnesium). First, have your water tested for Total Dissolved Solids and Hardness. Second, install a system to reduce the hardness, either a softening or a reverse osmosis system, depending on your water condition.

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Why does my water smells like “rotten eggs”?

This is caused by hydrogen sulfide in water, produced by bacteria in deep wells and in low-use stagnant water mains. It is highly corrosive, so other problems may accompany the smell. Odors such as this can be removed or reduced simply and cost effectively with a combination oxidizing filter, sediment filter and carbon filter. For assistance with this problem contact Pentair Everpure Technical Service at 1-800-942-1153 or email us at Learn more about sulfur water. 

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Do your cartridges reduce chlorine?

Yes, the Pentair Everpure cartridges that contain any carbon media such as Micro-Pure® carbon, carbon blocks, and/or Granular Activated Carbon will reduce chlorine and improve your water's taste and odor. The label states that the cartridge reduces chlorine taste and odor along with its capacity. Also check our catalog for cartridges with regard to more specific chlorine reduction capacities.

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How do I replace the cartridges?

Click here to download the PDF.

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I have water stains on my sinks and equipment.

  • Rust/orange. Dissolved, or ferrous, iron, although harmless, can cause problems with appearance and reddish-brown staining. High concentrations of iron can affect the color of beverages and the appearance of vegetables cooked in water. Dissolved metals such as ferrous iron can be removed with special filters, reverse osmosis or by softening, depending on the amount of metal contamination. Ferric iron are particles that can be removed with mechanical filtration.
  • Black. Excessive manganese in water causes staining of household fixtures, and can impart objectionable metallic taste and red or blue-green color to the water supply as well.
  • Green. These stains are usually the result of corrosion of copper plumbing, although copper can come from other sources as well. There are two simple methods of reducing copper in your water. The first is to flush your pipes by running the water for 30-60 seconds before using it. A second method is to install a point-of-use water filtration system that is NSF International certified for reduction of one or more heavy metals. Green color can appear in clear filter bowls. This is the result of harmless light algae growth, and can be removed by sanitation.

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What are your recommended water specifications?

Click here to download Pentair Everpure’s recommended water specifications by application.

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How do I get my municipal water report?

The 1996 Safe Drinking Water Act Amendments require that all municipal water systems provide customers with an annual report on the quality of their drinking water. This is called a Consumer Confidence Report. These reports are usually posted on their websites. Visit to locate your local water utility company.

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How do I get my water tested?

We offer two means of getting your water tested:

• Our SMARTWORKS Water Test Kit.

• Our Certified Lab Test. 

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How do I find the replacement part number I need?

Many replacement cartridges and parts are listed with our products here in our website. You could start by entering a model name, product description or application into the site's search function. If the part number you need is for a replacement cartridge, it is located on the cartridge's label. The part number is usually an 8-letter/digit combination that begins with "EV". If you need additional assistance, you can either e-mail us at or call us at 630.307.3000 or toll-free at 800.942.1153 (U.S. only).

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How can Pentair Everpure help my operation be more “green”?

Restaurants have discovered a great revenue stream from selling premium bottled waters. However, there are many drawbacks to prepackaged bottled water:

  • Energy is consumed to manufacture the bottles, contributing to greenhouse gasses.
  • Prepackaged bottled water often travel great distances to get to your operation, wasting fuel and increasing pollution.
  • Bottled water takes up valuable space in your operation.
  • There is significant waste associated with the bottles.

We offer products that allow your operation to move away from bottled water and all the drawbacks it brings, while still generating revenue.

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How often should I change my filter cartridges?

In order for our filters to perform as represented and to provide the best quality water possible, it is essential that filters be replaced periodically. The frequency of filter changes depends upon your water quality and your water usage. For example, if there is a lot of sediment and/or particulates in your water, then you will have to change your filters more frequently than a location with little to no sediment. Be sure to replace your filters whenever you notice a decline in the performance, whether it is a drop in flow rate and/or pressure or an unusual taste in the water.

Prefilter: The prefilter (coarse) cartridge should be changed when it becomes dirty to within 1/8" of the core or when you see the outlet pressure gauge fall into the red zone. Check the pressure gauge only when the equipment is calling for water. 

Submicron Cartridges: The cartridges should be changed at the first occurrence of a) the gallon rating stated on the label, b) every 6 months, or c) the pressure gauge needle falls into the red zone while your equipment is calling for water.

ScaleStick®: The Everpure ScaleStick™ needs to be replaced before its Hydroblend™ compound is completely used up.

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How do I remove "used" cartridges and install new ones?

  1. Shut off the power to any equipment, if applicable.
  2. Shut off the filter system by turning off the water supply. Open the flushing valve to relieve the pressure.
  3. Hold the head firmly and turn the cartridge to the left a ¼-turn until the rotation stops.  
  4. Pull the cartridge down and out of the head. Some water may drain out of the system. Throw away the used cartridge.
  5. Hold the head firmly then align the new cartridge's lug with the label on the head, and insert the new cartridge into the head.
  6. Turn the cartridge to the right a ¼-turn until the rotation stops.
  7. Turn on the water supply.
  8. Now, flush the cartridges by running water through the filter system to the drain for several minutes. Refer to the cartridge's label for specific flushing times. Note: Be sure to shut off the flushing valve when finished.
  9. Turn on the power to the equipment, if applicable.

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How do I locate product literature on your systems?

Product literature is posted on the product pages here in our site. Our Master Distributor partners can also provide you literature. Click here to locate a Master Distributor in your area. 

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A substance that when dissolved in water releases hydrogen ions. It has the ability to react with bases to form salt.  Acidic water is characterized by a sour taste, and turns a litmus paper red.

A condition of water when the pH is below 7.0.

A granular material, usually made from wood or coconut shell, that is roasted at high temperature in the absence of air. Activated carbon has a very porous structure, and is used as an adsorbent in water conditioning. Commonly used for reducing many types of chemicals such as chlorine, and for removing organic compounds from water.

A process that causes contaminates to separate from the water molecules and bond to the filter media.

An antimicrobial compound that inhibits the growth of bacteria. The active ingredient is silver, a natural antimicrobial metal ion.

Also called a base, alkali is the opposite of an acid. An alkali has a pH above 7.0 and is characterized by a bitter taste. Examples include carbonate and bicarbonate salts of calcium, magnesium, potassium, and sodium.

A condition of water when the pH is above 7.0. It is the capacity of a water to neutralize an acid.

A negatively charged ion in solution. Examples include chloride, nitrate and sulfate.


Tiny, one-celled organisms found in water that break down organic matter. Not all bacteria is harmful, but some can cause health problems. Chlorine or chloramine is typically added to municipal water supplies to kill bacteria. Bacteria can sometimes grow inside carbon filter canisters, due to the dark, wet environment. This can cause bio-film to develop on the filter media, reducing the filter’s effectiveness and shortening its life.

An environment where bacteria is unable to grow and reproduce. Silver is sometimes added to carbon filters to achieve this effect. A bacteriostatic filter does not actually kill the bacteria, but prevents its growth.

As bacteria grows and reproduces within a filter canister, it can over time create a slime film that adheres to the filter media. This film can clog the pores of the carbon, thus reducing its ability to filter.

A solution that helps to maintain the pH in water.


Dissolved calcium compounds are a major factor in making water hard, and causing the formation of scale

A positively charged ion in solution. Examples include sodium and calcium.

A common process for reducing hardness in water.  A synthetic resin is coated with positively charged sodium ions. When water containing dissolved, negatively charged cations (calcium and magnesium ions that cause the water hardness) meets the resin, the sodium ions are exchanged with the cations.

A carbon filter with millions of tiny pores that adsorb chemicals such as chlorine.

A combination of chlorine and a small amount of ammonia, chloramine is a disinfectant used by some water utilities. The addition of the ammonia helps to make the solution more stable and longer lasting. Chloramines can cause an adverse effect on the taste and odor of water.

Chloride is a salt that is highly soluble in water. It can cause corrosion on plumbing pipes and pitting corrosion on stainless steel. At high levels it imparts a salty taste to food and beverages. Public Drinking Water Standards require chloride levels not to exceed 250 mg/L

Chlorine is chemical used by many water utilities for the disinfection of water and as an oxidizing agent for organic matter and some metals. It imparts a noticeable taste and odor to water, and may contribute to form trihalomethanes (THM). When chlorine is introduced into water, a portion of it may bond with contaminants such as oils and organic matter and become “combined chlorine”. Another form of combined chlorine is chloramine, which some municipalities use instead of chlorine for disinfection. Chloramine is chlorine combined with ammonia. The chlorine that does not bond remains as residual Free Chlorine. Total chlorine is a total of both combined chlorine and free chlorine.

A tint that is usually caused by dissolved organic matter (often fulvic and humic acids). It cannot be removed by mechanical filtration. (Color is different than turbidity, which is cloudiness in water.)

A group of common waterborne intestinal parasites usually found in water contaminated by animal waste. It causes illness, and can sometimes be fatal to individuals with weakened immune systems. Cryptosporidium is resistant to chlorine disinfection, but can be removed from water with fine filtration.

A parasite that develops a hard protective shell when it leaves its host. This shell makes them strongly resilient, capable of surviving chlorine disinfection. When a cyst is ingested, it can cause intestinal illness, including diarrhea, abdominal pain, cramps and nausea. Cysts can be removed from water by fine filtration. Examples of cysts include Cryptosporidia and Giardia.



Gallons per Minute

A common water-borne protozoan parasite that can cause severe intestinal illness (also known as Beaver Fever) when ingested. Outside of its host, it becomes a cyst that is resistant to chlorine. Giardia can be removed by fine filtration.

A unit of weight equal to 1/7000th of a pound that is used to measure the hardness of water and the capacity of a water softener.


Water containing high levels of dissolved calcium, and lesser amounts of magnesium, typically found in limestone areas. It is often expressed as grains of hardness per gallon of water. Hard water produces scale when heated, which has been known to clog foodservice equipment such as coffee brewers and steamers.

A toxic, colorless gas produced naturally during decomposition of organic material that contains sulfur. It has an odor similar to rotten eggs, and can be corrosive.


Hard water has calcium and magnesium ions present, and ion exchange removes these from water by replacing them with non-hardness ions. Water softeners use an insoluble resin, which is saturated with sodium. As hard water comes in contact with this sodium-coated resin, the calcium and magnesium ions attach to the resin, and the sodium is released. The hardness is now removed from the water. The resin is flushed with a salt brine solution, and the sodium again attaches to the resin. The calcium and magnesium ions are released, and are flushed out with waste water.

See Resin.

Iron in water can be either ferrous (dissolved) or ferric (oxidized particles), and can creates red-orange staining on plumbing. Certain types of bacteria can feed off iron, and create slime that can clog plumbing.


A technology developed by KDF Fluid Treatment, Inc. about 25 years ago, KDF is a high-purity copper-zinc formulation that uses a process known as redox to remove chemicals, heavy metals and other inorganic materials from water supplies. Normally it is used in conjunction with an activated carbon filter because it extends the filter life and provides additional effectiveness at removing metals and chlorine.


See Scale.


Magnesium is a common element making up the earth’s crust. When dissolved in water along with calcium, the result is hard water. When energy is applied to hard water, the dissolved magnesium and calcium become hard deposits called scale. Scale can clog foodservice equipment such as coffee brewers and steam equipment.

A filtration process by which water is driven through a media, and the media prevents suspended solids from passing through. The density of the media determines the micron rating. A fine filter can stop particles as small as .5 micron, while a course filter might stop particles of >5 microns.

A fine material used in filters to allow the passage of water, but not certain particles or molecules that are suspended in the water. Ion exchange resin is also called a media.

A thin layer of microporous, semipermeable material that allows water to pass through, but not particles that are too large to fit through the pores. Membranes can filter substances from 5 microns to as small as .02 microns, depending on its classification. Everpure uses a pleated membrane in their precoat cartridge filters. Membranes are also used in reverse osmosis systems.

A chemical oxygenate that is added to gasoline to help it burn cleaner. It is easily dissolved in water, and can enter water sources through leaking underground storage tanks and pipelines. According to the EPA, there is insufficient data at this time to determine the health effects of MTBE in small doses, but in large doses is it a potential human carcinogen.

A precoat filter with AgION(R) antimicrobial compound that inhibits the growth of bacteria. As water passes through the filter, the carbon adsorbs chlorine, off-tastes and odors, and AgION works to inhibit any bacterial growth.

A unit of measurement equal to one millionth of a meter, 1/25,000 of an inch. A high-grade filter can remove solids from water as small as .5 micron.



A not-for-profit organization that is the world leader in standards development, product certification, education, and risk-management for public health and safety. NSF develops national standards, focusing on food, water, indoor air, and the environment.

NSF Standard 53 was established to help consumers compare the contaminant reduction performance and capacity of drinking water treatment systems. Included under 53 are standards for the reduction of chemicals and heavy metals, VOC’s, turbidity, cysts, TTHM’s and organic compounds.

A nitrogen compound that is a common groundwater contaminant in rural areas. It comes from a number of sources, including fertilizer run-off, leaking septic tanks, landfills and animal waste. Excessive levels in drinking water can cause health problems, especially for infants.



Parts per billion


Parts per million

Solids suspended in water.

A device generally consisting of multiple carbon-filled vessels that supply filtered ingredient water to multiple water using appliances such as a coffee brewers, fountain dispensers, ice machines, warewashing equipment and steamers.

A device generally consisting of one or more carbon-filled vessels that supply filtered ingredient water to single water using appliances such as a coffee brewers, fountain dispensers, ice machines, warewashing equipment and steamers.

A coarse filter that is used to capture sediment and particles of >5 microns. A prefilter is typically placed before fine filtration to extend the life of the fine filters.


Water has both dissolved alkaline and acid. When there is equal amounts of both, the water has a pH of 7 and is considered neutral. Water with a pH of less than 7 is considered acidic. Too much acidity can be corrosive on equipment, discolor water and create an off-taste.


An insoluble permanent medium used in water softeners as part of the ion exchange process. Resin is usually polymer beads.

A process for purifying water that uses pressure to force water through a semipermeable membrane. This leaves behind the dissolved minerals (see TDS), which are then carried out with waste water. Often, mechanical and/or chemical filters are installed before a reverse osmosis system to improve taste and odor of the water.


Water with high concentrations of calcium and magnesium, when heated, revert back to rock. This can cause a hard crust to form on foodservice equipment such as ice machines, coffee brewers, espresso machines and steamers. Over time it can reduce the efficiency and damage the equipment. Also called “limescale”.

A fine membrane filter used to remove particulates of less than one micron in size.


Taste & Odor

A measure of the quantity of dissolved minerals in water. High levels of TDS usually requires a reverse osmosis system to remove.

When chlorine is used to disinfect water it can sometimes react with natural organic matter to create THM’s, a volatile organic chemical. According to the EPA, drinking water contaminated with THM’s over many years may cause health problems including cancer.

Fine, suspended solids can cause the water to become cloudy. The opaqueness of the water is called turbidity, and is measured by the amount of scattering and absorption of light (in nephelometric turbidity units, or NTU). Drinking water should be less than 0.5 NTU.


Organic chemicals that are found in many common products such as paints, fuels and solvents. VOC’s evaporate easily. Water that is contaminated with high levels of VOC’s is believed to cause a number of serious health problems.

The smallest living organism, often less than .02 micron (about 100 times smaller than bacteria), viruses are a parasite that can cause diseases in humans.

2018 Foodservice Catalog

Foodservice solutions portfolio and list prices for 2018.

2018 Catalogue de services alimentaires - Français

Portefeuille de solutions de restauration et prix catalogue pour 2018.

Everpure® EVP123

Match an Everpure solution to your foodservice application with this easy-to-use sizing guide.

Water Specifications

Water quality attribute targets for key foodservice application at-a-glance.

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