1. What is NSF Certification

National Sanitation Foundation or NSF Certification is an assurance of quality and integrity.  It states that: 

  • The system meets the contaminant reduction claims of the manufacturer.
  • The system is not adding anything harmful to the water.
  • The system is structurally sound.
  • Advertising, literatrure, and labeling are not misleading.
  • The materials and manufacturing process do not change. 

For extensive product testing and material analyses to unannounced plant inspectionss, NSF undertakes a complete evaluation of every aspect of a product's development before it can earn certification.  NSF Certification is not a one-time-activity --NSF requires regular on-site inspections of manufacturiing facilities, as well as periodic retesting of products against the most current national standards.  For the consumer, this allows NSF certified products to be purchased and used with confidence. 

2. Are Multipure Drinking Water Systems certified to reduce contaminants of health concerns?

Multipure's Drinking Water Systems have been tested and NSF certified under NSF/ANSI Standard 42 for reduction of aesthetic contaminants, and Standard 53 for reduction of contaminants of health concern.  The replacement filters are also tested and NSF certified. 

3. What contaminants are Multipure Drinking Water Stystems NSF certified to reduce?

Multipure Drinking Water Systems have been tested and certified by NSF for the reduction of many contaminants.  More information can be found on our NSF Certification page.

4. Can the Multipure Drinking Water System be used during an emergency, or when the water is turned off?

Yes, you can hand pump or siphon water through the Multipure unit during an emergency situation. 

5. Does the system remove the natural, healthy trace minerals such as calcium, magnesium, or potassium?

No, Multipure Drinking Water Systems leave in the healthful, naturally-occurring minerals.

6. Why did Multipure design the filter to take out contaminants likes VOCs but not the natural minerals?

Minerals are totally dissolved in solution and do not have an actual physical size; thus, the minerals pass through the filter unchanged.  The materials used in Multipure Drinking Waterare specially selected for their ability to react with the chemicals in the water but not with natural minerals.  The ability to leave the natural, healthful minerals in while reducing harmful contaminants was a vital factor in the development of Multipure's Solid Carbon Block Filter.  The medical community has always maintained that a certain minerals are essential for a healthy body, and a study by the World Health Organization (WHO) Workshop found that drinking water with high levels of beneficial, healthful minerals may reduce the risk of heart disease.1


1. United States Department of Agriculture - Agricultural Research Service.  November 30, 2011. "Mineral Elements Related to Cardiovasular Health." Accessed December 1, 2011.

7. If the unit does not remove minerals, how does it take out lead?

Multipure's Solid Carbon Block Filter allows certain disolved impurities, such as lead and chemicals, to adsorb to the filter surface.  Adsoprtion (as opposed to absorption) is defined as :adhesian in a thin layer of molecules to the surface of solid bodies with which they are in contact." (Webster's Collegiate Dictionary).  Thus, the solid carbon block is lke a magnet that lead molecules adhere to. 

8. If I leave on vacation, do I have to disconnect my filter?

Do not allow water to sit in the unit for extended periods of time (10 or more days).  If the unit will sit, unused, for 10 or more days, drain all the water from the system and remove the filter.  Upon your return, reconnect the filter for normal use. 

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