Food Service FAQs

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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.

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.

Where can I purchase Pentair Everpure commercial products?

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

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.

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.

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,

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.  

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.

How often do I have to delime my equipment?

Click here to download the PDF.

How do I delime my equipment?

Click here to download the PDF.

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.

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.

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.

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

Click here to download boil order instructions. 

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. 

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.

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. 

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.

How do I replace the cartridges?

Click here to download the PDF.

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.

What are your recommended water specifications?

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

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.

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. 

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 info@everpure.comor call us at 630.307.3000 or toll-free at 800.942.1153 (U.S. only).

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.

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.

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.

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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Lisa Stich
Senior Marketing Manager
Pentair Foodservice
20580 Enterprise Avenue
Brookfield, WI  53045

(262) 317-1675


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