Lab Test Results

What Our Pitcher Filter Removes From Tap Water

You deserve to know what your water filter is doing for you. All of our products have been independently tested to comply with the rigorous NSF/ANSI standards by accredited laboratories. We want to ensure we have you covered no matter how bad a contamination problem may get.

Performance Data for Clearly Filtered Pitcher

Performance Data for Clearly Filtered Pitcher
Product Type Gravity-Fed Water Pitcher
Rated Capacity 100 Gallons (378 L)
Testing Completed 11/2025
Replacement Element Model CF-PRF
Operating Temperatures 38-85°F (4-30°C)
Manufactured By Clearly Filtered, Inc. 877-876-2740

The Clearly Filtered Filtered Water Pitcher and Replacement Pitcher Filter are certified by NSF to NSF/ANSI Standards 42 and 372. Additional testing was performed and results were provided by QFT, a lab now operating as IAPMO New Jersey, a division of IAPMO, an independent ISO 17025 certified laboratory that is capable of testing following NSF/ANSI protocols. All testing occurred under controlled laboratory conditions. Sample contaminants were prepared, measured and run through the filter. The filter results presented are the maximum removal percentage. Not all contaminants that were tested had established NSF/ANSI protocols at the time testing was performed. Actual performance may vary based on local water conditions. Not all contaminants may be present in users drinking water. System is designed for use with municipally treated tap water. Filter is not designed for use with water that is microbiologically unsafe or of unknown quality. Individuals with unknown water quality should follow the advice of local health authorities with regards to water treatment.

NSF Performance Data Sheet
Top Searches
  • Chemical disinfectants are used to reduce the risk of water-borne diseases. The disinfection process can form disinfection by-products (DBP) that have been linked to cancer, reproductive issues, and damage to the liver, kidneys, and central nervous systems.

    • Contaminant
    • Challenge Water
      (mg/L)
    • Filtered Water
      (mg/L)
    • % Removal
    • Health Concern
    • Ammonia
    • 2
    • <0.0001
    • >99.99%
    • Organ Damage
    • Calcium Hypochlorite
    • 2.1
    • <0.01
    • >99.52%
    • Stomach Pain
    • Chloramine
    • 3.1
    • <0.01
    • >99.68%
    • Anemia
    • Chloride
    • 850
    • <1
    • >99.88%
    • Chlorine
    • 2.1
    • <0.01
    • >99.52%
    • Acute Toxicity
    • Formaldehyde
    • 0.05
    • <0.0005
    • >99.00%
    • Cancer
    • Iodine
    • 2
    • <0.01
    • >99.50%
    • Upset Stomach
    • Nitrate
    • 27
    • <0.01
    • >99.96%
    • Cancer
    • Nitrate and nitrite
    • 15
    • <0.01
    • >99.93%
    • Cancer
    • Nitrite
    • 3
    • <0.01
    • >99.67%
    • Cancer
    • Perchlorate
    • 0.1
    • <0.004
    • >96.00%
    • Hormone Disruption
    • Sulfate
    • 852
    • 1
    • 99.88%
    • Dehydration
    • Sulfide
    • 1
    • <0.01
    • >99.00%
    Chemical Disinfectants
    Contaminant % Removal Challenge Water (mg/L) Filtered Water (mg/L) Health Concern
    Ammonia >99.99% 2 <0.0001 Organ Damage
    Calcium Hypochlorite >99.52% 2.1 <0.01 Stomach Pain
    Chloramine >99.68% 3.1 <0.01 Anemia
    Chloride >99.88% 850 <1
    Chlorine >99.52% 2.1 <0.01 Acute Toxicity
    Formaldehyde >99.00% 0.05 <0.0005 Cancer
    Iodine >99.50% 2 <0.01 Upset Stomach
    Nitrate >99.96% 27 <0.01 Cancer
    Nitrate and nitrite >99.93% 15 <0.01 Cancer
    Nitrite >99.67% 3 <0.01 Cancer
    Perchlorate >96.00% 0.1 <0.004 Hormone Disruption
    Sulfate 99.88% 852 1 Dehydration
    Sulfide >99.00% 1 <0.01

Find out what's in your water

Water Report
MADE WITH HIGH QUALITY MATERIALS

MADE WITH HIGH QUALITY MATERIALS

INDEPENDENTLY TESTED BY THIRD-PARTY LABS

INDEPENDENTLY TESTED BY THIRD-PARTY LABS

FILTERS HUNDREDS OF CONTAMINANTS

FILTERS HUNDREDS OF CONTAMINANTS