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.
Bottom line
In our scoring the Epic Smart Shield Under-Sink earns 4.1/10, a weak result, and it stands out on certification independence (8.0/10). On the data, it holds IAPMO certification to reduce chlorine taste and odor, lead, VOCs. It works out to about $0.177 per gallon, a middling cost per gallon. Our main catch: marketed for PFAS removal but not certified to NSF/ANSI 53 or 58 for PFOA/PFOS. Certification is not a substitute for a water test of your own supply.
Flags
- · Marketed for PFAS removal but not certified to NSF/ANSI 53 or 58 for PFOA/PFOS.
Flags indicate missing certifications or data gaps under our rubric, not a confirmed finding that a product fails to perform.
Where to buy
No buy link on this one: it scored Limited under our rubric, and we only link products we would shortlist ourselves.
Total cost of ownership
Checked 42 days ago- Cost / gallon
- $0.177
- ~Annual filters
- $195/yr
Certifications
- NSF/ANSI 42chlorine
- NSF/ANSI 53lead, VOCs, mercury, cysts
- NSF/ANSI 401pharmaceuticals
Filters only protect you on their swap schedule. Get an email reminder when this one is due - one note around swap time, nothing else.
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 NSF/ANSI 53 or 58 for PFOA/PFOS.
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 NSF/ANSI 53 or 58 for PFOA/PFOS.
- +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
- Is the Epic Smart Shield Under-Sink NSF certified, and does it remove lead or PFAS?
- Per the public NSF/WQA/IAPMO databases it holds IAPMO certification to reduce chlorine taste and odor, lead, VOCs, chloramine, and more. It is certified for lead. It is marketed for PFAS but we found no accredited PFAS certification.
- 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.
Compared head-to-head
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 were last checked 42 days ago; the freshness chip above the cost panel shows the current state. See the methodology for how each rule fires.