NSF/ANSI Standard 401
Emerging Contaminants (PFAS, pharmaceuticals)
NSF-401 is the newest standard addressing emerging contaminants of concern including PFAS (forever chemicals), pharmaceuticals, herbicides, and other compounds not covered by older standards. This certification ensures filters can reduce modern water quality threats.
Key Contaminants Removed
Ideal For
- ✓PFAS (forever chemicals) removal
- ✓Pharmaceutical reduction
- ✓Cutting-edge water protection
- ✓Modern contaminant concerns
Certification Focus: Incidental contaminants including PFAS
NSF-401 Certified Filters (9)
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![P1WB2[1] [Pb]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F41odmSW2mHL._AC_SX522_.jpg&w=3840&q=75)
Whirlpool Corporation
P1WB2[1] [Pb]
NSF Certified:
Capacity
200 gal
Filter Life
1 mo
Flow Rate
0.5 gpm
Removes 1 contaminants:
Metolachlor
![P8WB2L[1] [Pb]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F41ENMmwPWqL._AC_SX569_.jpg&w=3840&q=75)
Whirlpool Corporation
P8WB2L[1] [Pb]
NSF Certified:
Capacity
200 gal
Filter Life
1 mo
Flow Rate
0.5 gpm
Removes 0 contaminants:
![P9WB2L[1] [Pb]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F41BBhKG-jUL._AC_SX569_.jpg&w=3840&q=75)
Whirlpool Corporation
P9WB2L[1] [Pb]
NSF Certified:
Capacity
200 gal
Filter Life
1 mo
Flow Rate
0.6 gpm
Removes 0 contaminants:
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
1,2 Dichlorobenzene, 1,4 Dichlorobenzene, 2,4-D, Asbestos, Atrazine +14 more
Pentair Residential Filtration, LLC
EVERPURE RESIDENTIAL H-104
NSF Certified:
Capacity
10001 gal
Filter Life
33 mo
Flow Rate
0.5 gpm
Removes 0 contaminants:
![PWF-NL240V[1]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F41%2BIFzdNnoL._AC_SX569_.jpg&w=3840&q=75)
Whirlpool Corporation
PWF-NL240V[1]
NSF Certified:
Capacity
240 gal
Filter Life
1 mo
Flow Rate
0.5 gpm
Removes 1 contaminants:
Metolachlor
Whirlpool Corporation
W11569861
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.52 gpm
Removes 22 contaminants:
1,2 Dichlorobenzene, 1,2,4 Trichlorobenzene, 1,4 Dichlorobenzene, 2,4-D, Asbestos +17 more
Pentair Residential Filtration, LLC
Everpure Residential H-300 Filter
NSF Certified:
Capacity
1 gal
Flow Rate
0.5 gpm
Removes 0 contaminants:
Pentair Residential Filtration, LLC
Everpure Residential H-300-NXT
NSF Certified:
Capacity
3001 gal
Filter Life
10 mo
Flow Rate
0.5 gpm
Removes 5 contaminants:
Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Cryptosporidium, Lead
About NSF-401 Certification
All filters listed on this page have been independently tested and certified by NSF International or WQA to meet the requirements of NSF/ANSI Standard 401. This certification ensures that these filters have been rigorously tested for their ability to reduce specific contaminants as claimed by manufacturers.
We recommend choosing filters based on your specific water quality concerns. You can check your local water quality report or test results to identify which contaminants are present in your water supply, then select filters certified to remove those specific contaminants.