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FilterScored

Water filter · under-sink

Epic Smart Shield Under-Sink

A slim inline under-sink filter genuinely certified by IAPMO to NSF/ANSI 42, 53 and 401 for lead, VOCs and more - though its PFAS reduction is tested to standards, not in the certified scope.

4.1
Limited
Composite (0-10), water-v1.0
Confidence: Verified

Flags

  • · Marketed for PFAS removal but not certified to P473 (or 53+401).

Flags indicate missing certifications or data gaps under our rubric, not a confirmed finding that a product fails to perform.

Total cost of ownership

Cost / gallon
$0.177
~Annual filters
$195/yr

Certifications

Overview

The Epic Smart Shield Under-Sink is a under sink water filter. It is third-party certified (IAPMO) to reduce chlorine taste and odor, lead, VOCs, chloramine, mercury, cysts, pharmaceuticals. It is also marketed for PFAS, PFOA, PFOS, microplastics, for which we found no accredited third-party certification (so we award no certification credit; this is not a finding that it fails to reduce them). Running cost works out to about $0.177 per gallon.

By the numbers

Certified to reduce
chlorine taste and odor, lead, VOCs, chloramine, mercury, cysts, pharmaceuticals
Marketed, no certification found
PFAS, PFOA, PFOS, microplastics
Format
under sink
Cartridge life
651 gallons
Cost per gallon
$0.177
Annual filter cost (~1,100 gal)
$195/yr
Install
under-sink inline, direct-connect, DIY
Certifications
IAPMO NSF/ANSI 42; IAPMO NSF/ANSI 53; IAPMO NSF/ANSI 401

Strengths

  • + Certification Independence: 8.0/10

Watch-outs

  • - Verified Contaminant Reduction: 4.0/10
  • - Total Cost of Ownership: 0.0/10
  • - Marketed for PFAS removal but not certified to P473 (or 53+401).

Who it is for

  • · Homes with lead service lines or older plumbing (certified for lead)

Who should skip it

  • · Anyone buying specifically for PFAS - it is marketed for it but not certified

What to know before buying

  • · The single twist-in cartridge is rated for about 651 gallons (commonly near a year for a typical household) before replacement.
  • · Epic markets IAPMO certification to NSF/ANSI 42, 53, and 401; FilterScored has flagged this for manual confirmation because the model could not be located in the readable certification databases.
  • · Because it is a carbon-based filter rather than RO, it does not reduce TDS.

How it scored

Verified Contaminant Reduction

4.0/10 · 35%

Held NSF/WQA/IAPMO certifications for the contaminants that matter. A claim is not a certification.

Capped at 4.0 (raw 6.0): Marketed for PFAS removal but not certified to P473 (or 53+401).

  • +3NSF/ANSI 53 certified for lead ANSF/53 lead - Independently certified to reduce lead under NSF/ANSI 53.
  • +1NSF/ANSI 42 certified for chlorine ANSF/42 chlorine - Certified to reduce chlorine taste and odor.
  • +2NSF/ANSI 401 emerging contaminants ANSF/401 - Certified for emerging contaminants such as pharmaceuticals.

Total Cost of Ownership

0.0/10 · 25%

Computed cost per gallon vs the format-class median. The number nobody surfaces.

  • 0Cost per gallon vs class median A$0.177/gal (above class median (expensive to run)) - Computed cost per gallon scored against the format-class median.

Certification Independence

8.0/10 · 15%

Certified on the official database vs self-claimed 'tested to' marketing.

  • +5Certifications verifiable on official database A3 listings - Certifications are listed on the official NSF/WQA/IAPMO database, not just a logo.
  • +3Per-contaminant reduction disclosed Bperformance data sheet - Publishes percent reduction per contaminant at rated capacity.
  • ·Marketing exceeds certified scope Aclaims beyond certified scope - Marketing emphasizes contaminants the certifications do not cover.

Capacity & Flow Fit

5.0/10 · 15%

Cartridge life and flow appropriate to the format.

  • +3Cartridge life fits the format B651 gal (norm 500) - Rated cartridge life is appropriate for this filter format.
  • +2Honestly rated filter life Bgallon rating matches typical use - Months claim matches the gallon rating at typical use.

Practical Fit

7.0/10 · 10%

Install, footprint, and source-water readiness.

  • +5Install type disclosed Cunder-sink inline, direct-connect, DIY - Install method and difficulty are disclosed up front.
  • +2Predictable replacement schedule Chonest life rating - Replacement schedule is predictable from the honest gallon rating.

FAQ

How long does the Epic Smart Shield filter last?
The cartridge is rated for about 651 gallons, commonly around a year for an average household before it needs replacing.
What is the Smart Shield certified for?
Epic markets IAPMO certification to NSF/ANSI 42, 53, and 401; as a carbon filter it does not reduce total dissolved solids the way an RO system would.

Related guides

This score is our opinion under our published rubric, not a statement of objective fact or a lab test of this product. We score what third-party certifications prove; absence of a certification means we found no verification, not that a product fails to perform. Last reviewed 2026-06-01. Scored under water-v1.0. Prices and certifications are re-verified on a cadence; see the methodology for how each rule fires.