Reduction by contaminant

95.5%

Chlorine

99.99%

Cysts

99.3%

Lead

99.6%

VOCs

94%

PFOA (PFAS)

98%

PFOS (PFAS)

99.9%

Glyphosate

99.6%

Microplastics

Easy Install, No Plumber Required

The Smart Shield is built around a solid carbon block filter that reduces lead, chlorine and VOCs while leaving the beneficial minerals in your water. It connects to your cold water line in 15 to 20 minutes, with no plumber required. Simple, effective, and sustainable, it’s everyday filtration you can trust.

Learn how we’re making waves

Free shipping on all subscription orders

Sustainable from start to finish

Every Epic filter is designed with the planet in mind, from recyclable materials and compostable packaging to our filter recycling program. Each Smart Shield filter replaces nearly 5,000 single-use plastic bottles, because clean water shouldn’t come at the Earth’s expense.

Recycling Program

Product details

Filter Details
  • Certified by IAPMO R&T to NSF/ANSI 42, 53 and 401 (model EWFESS4-DC)
  • Certified to reduce lead, chlorine, chloramine, cysts, mercury and VOCs, plus pharmaceuticals and BPA under NSF/ANSI 401
  • Also tested to reduce PFOA (94%), PFOS (98%), microplastics (99.6%) and glyphosate (over 99.9%)
  • Leaves the beneficial minerals (calcium, magnesium and potassium) in your water
  • 651 gallons (2,464 L) per filter, about 12 months for most households
  • Rated flow 1.25 gallons per minute; works at 40 to 120 psi
  • Cold water only (33 to 100°F)
  • Replaces nearly 5,000 half-liter plastic bottles per filter; 100% recyclable
How It Works

The Epic Smart Shield is an inline under-sink filter. It connects to your cold water line with the included connectors and hoses, with no plumber required, and fits neatly alongside your garbage disposal and storage items.

Its solid carbon block reduces contaminants without stripping out calcium, magnesium and potassium the way reverse osmosis does. IAPMO R&T (an ANSI-accredited certification body) certifies it to NSF/ANSI 42, 53 and 401 at its full 651-gallon rated capacity.

When to replace: every 651 gallons, which is about 12 months for most households.

Features

Keeps the Good Minerals

Carbon block filtration reduces contaminants while leaving calcium, magnesium and potassium in your water.

Certified Performance

Certified by IAPMO R&T to NSF/ANSI 42 (chlorine and chloramine), 53 (lead, cysts, mercury and VOCs) and 401 (pharmaceuticals and BPA). Our lowest certified result is MTBE at 86.6%, and we publish it alongside the rest.

Epic Value

651 gallons of filtered water per filter, about 12 months for most households. Subscribe and save 15% on replacement filters.

Epic Sustainability

Each recyclable filter replaces nearly 5,000 half-liter plastic bottles. Recycle it with #7 plastics or through our Recycling Program.

Why Choose the Epic Smart Shield?

Solid Carbon Block

Reduces lead, chlorine and VOCs, certified by IAPMO R&T to NSF/ANSI 42, 53 and 401.

Keeps the Minerals

Unlike reverse osmosis, it leaves calcium, magnesium and potassium in your water.

Eco-Friendly

100% recyclable, BPA-free, and replaces nearly 5,000 half-liter plastic bottles. Check out our Recycling Program for more info!

Long-Lasting

651 gallons per filter, about 12 months for most households.

DIY Friendly

Installs in 15 to 20 minutes with an adjustable wrench and a Phillips screwdriver. Heavy-duty Velcro tape is included for mounting.

3-Year Warranty

3-year limited warranty on system hardware, plus a 30-day satisfaction guarantee (60 days for Clean Water Club members).

Important Note

Cold water only. For areas with high sediment or older plumbing, add the Epic Smart Shield Sediment Filter to protect the filter. Do not use with water that is microbiologically unsafe or of unknown quality.

Dimensions: 19¾” Tall x 4½” Deep x 4¼” Wide

Epic For The Earth

Goodbye Single-Use Plastics

Each Smart Shield filter replaces nearly 5,000 half-liter plastic bottles. Enjoy cleaner water while actively reducing plastic waste.

Meaningful Partnerships & Giving Back

We partner with 6 inspiring non-profits, designing unique artist-crafted water bottles to support their causes. A portion of every bottle sold goes directly to these EPIC organizations. Learn more here!

Eco-Friendly Materials

Our packaging is 100% compostable, and our Filter Recycling Program helps you recycle used filters easily (and rewards you, too!). We also reuse warehouse materials to further minimize our environmental footprint.

Recycle & Get Rewarded

Recycle your filters responsibly with TerraCycle’s Zero Waste Box program. Learn how you can recycle your filters and earn rewards while doing it.

4.9
Rated 4.9 out of 5 stars
Based on 404 reviews
99%would recommend these products
PerformanceRated 4.9 on a scale of 1 to 5
Reviews Summary
Customers say this under-sink water filter system is exceptionally easy to install, typically taking 20-30 minutes. Many reviews mention significant improvements in water taste, describing it as clean, fresh, and free from chlorine and metallic flavors. Users frequently praise the convenience of having filtered water directly from the tap, eliminating the need for pitcher systems. Common feedback includes appreciation for the compact design that fits well under sinks with limited space. While most find installation straightforward, some note occasional connection issues requiring proper tube insertion depth. Several reviews mention reduced water pressure, though many find this acceptable. Users consistently report the filter's effectiveness and express confidence in water quality, with many becoming long-term customers who recommend the product to others.
Customers Talked About
404 reviews
  • AW
    Andrew W.
    Verified Buyer
    Reviewing
    Epic Smart Shield Max Replacement Cartridge
    I recommend this product
    Product Standouts Easy to Install, Improved Water Taste, Intelligent Filtering, Sustainability
    Rated 5 out of 5 stars
    2 months ago
    Love the products

    I use this on my sink and the pitcher in my fridge. I love their products and I don’t even have to test the filtration. I guarantee you will immediately taste what water is supposed to taste like. We were using Brita and Pur filters for years and decided we needed to take it a step further. It’s an immediate noticeable difference. Thank you for producing great products.

    PerformanceRated 5.0 on a scale of 1 to 5
  • MV
    Michael V.
    Verified Buyer
    Reviewing
    Epic Smart Shield
    I recommend this product
    Product Standouts Easy to Install
    Rated 5 out of 5 stars
    3 months ago
    Works As Advertised

    The photo illustrated install guide was a blessing. I could practice it in my head before I got to it for real. For an old guy like me the hardest part was crawling under the sink. The install was so easy. I did have a small leak from one of the tubes and I remembered the guide saying to make sure that you push them in all the way into their lock sockets. I could have cut the tubes to remove the slack but I got lazy. My first glass of filtered water was mind blowing. I had no idea my city water was so bad. I highly recommend this filter.

    PerformanceRated 5.0 on a scale of 1 to 5
  • TD Profile picture for Tameka D.
    Tameka D.
    Verified Buyer
    Reviewing
    Epic Smart Shield Max
    I recommend this product
    Product Standouts Easy to Install, Improved Water Taste, Intelligent Filtering, Sustainability
    Rated 5 out of 5 stars
    8 months ago
    LIFESAVER

    Love this our lives has not been the same since we’ve installed our under sink water filter. My kids love the fact that they can grab a cup and get water straight form the tap without worrying about contaminations it makes everyone’s life so much easier. Also the installation process was quick and easy to follow instructions.

    Would definetely recommend this product.

    PerformanceRated 5.0 on a scale of 1 to 5
  • RP
    Rob P.
    Verified Buyer
    Reviewing
    Epic Smart Shield Max
    I recommend this product
    Product Standouts Intelligent Filtering, Improved Water Taste, Easy to Install
    Rated 5 out of 5 stars
    9 months ago
    Great Filter

    (I also posted this review on Amazon) First, I did some extensive research into an under sink filter that was not an RO unit. In addition to a reduction of cabinet space and waste flow not making RO a good option for me, I also didn't really have a good place to install a dedicated faucet. I settled on this Epic filter due to its predecessor (Epic Smart Shield), the excellent reviews about the water quality post filter, and the NSF ratings (some Max testing is still pending). In addition, since I was installing this in the kitchen sink cold water line, I was very concerned about the flow rate. I had settled on either this Epic unit or the Clearly Filtered 3 stage and chose this one due to the flow rate. I am very happy to report that the reduction in flow is hardly noticeable if there is one at all (my kitchen sink flow rate is approximately 0.8gpm).

    The overall design is 'good' and the only reason I don't say 'excellent' is due to the mounting style. The mounting method is a single slide hole on rear of the housing and is just not a great design. As a product and service engineer, it pains me see such things, but it is what it is. I obviously knew this up front due to my research, so I also knew I was going to make my own mount. After going through several methods in my head, I settled on a custom arrangement that allowed me to attach the fliter housing directly to my garbage disposal using a 1.5" velcro strap and a holster belt clip mounted to the filter head, all…

    PerformanceRated 5.0 on a scale of 1 to 5
  • TG Profile picture for T.H. G. a. C.google logo
    T.H. G. a. C.
    Verified Buyer
    Reviewing
    Epic Smart Shield Max
    I recommend this product
    Product Standouts Intelligent Filtering, Easy to Install, Sustainability, Improved Water Taste
    Rated 5 out of 5 stars
    11 months ago
    Epic Smart Shield Max

    We only drink Alkaline water. This system has proven to produce water that competes with the flavor of our alkaline water. I am so impressed with the taste and ease of installation. I had a little trouble at first, but it was related to my sink connections not the system.

    PerformanceRated 5.0 on a scale of 1 to 5
      
Cannot place order, conditions not met:
OK