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MaxClear Technology

Gravity Water Filter

  • The only filter certified to filter microplastics, lead and total PFAS
  • Includes ceramic and carbon filtration technology
  • Fits most gravity systems, like Berkey, ProOne, Boroux, Alexapure
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Unmatched certified filtration

The only gravity filter on the market certified to reduce microplastics, lead and total PFAS (forever chemicals), pharmaceuticals and pesticides. Our powerful filtration gives you confidence cheaper filters can't match.

Designed to last

Our filters combine both ceramic and carbon filtration technologies to deliver clean, great-tasting water for up to 6 months each — perfect for hassle-free, reliable filtration.

Great-tasting water

Guaranteed to remove 99% of lead, Total PFAS (forever chemicals) and chlorine, leaving crisp, clean water you’ll enjoy in every glass.

Substance Average Reduction
NSF/ANSI 42 - Aesthetic Effects
Chlorine 99.4%
Chloramine 99.6%
Particulates Class 1 96.5%
NSF/ANSI 53 - Health Effects
Lead, pH 6.5 99.2%
Lead, pH 8.5 99.1%
Total PFAS 99.6%
NSF/ANSI 401- Incidental Contaminants and Emerging Compounds
Microplastics 96.5%
Atenolol 99.4%
Carbamazepine 99.0%
Meprobamate 99.3%
Trimethoprim 99.2%
DEET 97.8%
Linuron 99.2%
Metolachlor 99.0%

Scout 2.25 Gallon Gravity Countertop System

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Venture 3 Gallon Gravity Countertop System

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Berkey®

ProOne®

Alexapure®

Aquacera®

Boroux®

British Berkefeld®

Patriot Pure®

Purewell®

Waterdrop®

Dimensions 7" x 2.8"
Weight Weight (excl. additional filters) 2.75 lb
Model # MCF701
Materials Ceramic, Plastic
Certifications IAPMO Independently Certified
Filter Lifespan Up to 6 months
Downloads Instruction Manual

Culligan with MaxClear Technology can make your gravity system better

Culligan gravity water filters are universally compatible, so they fit almost all gravity water filter systems on the market. With industry leading contaminant reduction certifications, upgrading your current gravity system with MaxClear filters is the easiest way to protect your water.

Real stories of proven superiority

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Unmatched certification for reducing total PFAS, lead, and microplastics

Certified to reduce Brand 1 Brand 2 Brand 3 Brand 4
Microplastics
Lead
Total PFAS
Chlorine
Chloramine
Pharmaceuticals
Pesticides

This table represents certified contaminant reduction. The results presented are sourced from the available certification data for BOROUX® Foundation™ Black Filters and Berkey® Black Berkey®(BB9-2) Water Filters. As of 7/15/2025 BOROUX® and Berkey® Performance Data Sheets.

Filter what matters

Not all filtration is created equal. Culligan filtration is certified for the most common—and most concerning—drinking water contaminants.
PFAS
Linked to long-term health concerns and increasingly detected in U.S. water supplies. Over 143 million Americans are estimated to have PFAS in their drinking water.
Lead
A toxic heavy metal that can leach into water through aging pipes and household plumbing. An estimated 9 million U.S. homes still receive water through lead service lines.
Microplastics
Tiny plastic particles that can enter drinking water from environmental and household sources. A global study found microplastics in over 80% of tap water samples tested worldwide.
Pharmaceuticals
Compounds from prescription and over-the-counter drugs that can persist in water sources. Testing at 25 U.S. water treatment plants detected 118 distinct pharmaceutical compounds in treated drinking water.
Pesticides
Chemicals used in agriculture that can migrate into groundwater and surface water sources. Pesticides were detected in 41% of U.S. public drinking water supply wells tested.
Chlorine & Chloramines
Commonly used disinfectants that can impact taste, odor, and overall water enjoyment. About 98% of U.S. water treatment systems use chlorine-based disinfection to help provide safe drinking water.

Our commitment to safety

Your family’s health matters to us. That’s why we designed our Culligan with MaxClear Technology filtration system to meet the highest safety standards, certified by IAPMO. It’s one more way we help you enjoy cleaner water with confidence.

View Certifications Report
IAPMO R&T logo
MaxClear Technology

Maximum filtration

Combining ceramic and carbon technologies

  • Outer ceramic shell

    Filters out microplastics and fine particles at the first stage of filtration

  • Activated carbon

    Reduces chlorine and organic matter to improve taste and odor

  • High-flow carbon block

    Filters lead, Total PFAS (forever chemicals, pharmaceuticals and pesticides for cleaner water you can trust.

Discover why more people are switching to MaxClear

  • “The filters last an incredibly long time compared to other water filters, they produce beautifully neutral clean tasting water."

    Dr Brogbo

    Verified User

  • "These are great replacement filters for my Berkey gravity water filter. The filters that came with my Berkey were carbon filters but this these filters are 2-in-1 filters with a combination of ceramic and carbon."

    Brandon W

    Verified User

  • “I'm a stickler for clean water, and these water filters are perfect to replace the ones in my gravity-fed water filtration system. They are hefty and easy to install. Water tastes great!”

    Mary K

    Verified User

Water you love.™

At Culligan, we’ve been helping people enjoy one of life’s essential resources since 1936.

Our commitment to the highest quality standards and sustainability drives us to develop thoughtfully designed products that ensure your water is cleaner, crisper, and always ready—wherever you need it.

FAQs

Yes. Culligan with MaxClear Technology filters are certified to reduce 99% of Total PFAS.

Yes. They are certified to reduce microplastics, along with lead and Total PFAS.

Most households replace filters every 6 months for best performance.

Yes. They are IAPMO certified to NSF/ANSI standards for contaminant reduction.

Yes. A fresh filter typically restores optimal taste and performance.

Yes. Many users rely on gravity filters for travel, RV use, and emergency preparedness.

Culligan with MaxClear Technology filters are certified to reduce harmful contaminants, including microplastics, lead, Total PFAS (forever chemicals), pharmaceuticals, pesticides, chlorine, and chloramine.

For the full list of what we reduce, see our performance certifications here

The more filters you use, the more capacity you get. Choose what fits your needs and scale as you go.

1 filter: 50 gallons
2 filters: 100 gallons
3 filters: 150 gallons

Scout systems are certified for use with 1 and 2 filters.
Venture systems are certified for use with 1, 2, and 3 filters.

Yes, our MaxClear Technology filters are compatible with most gravity filter systems, including Berkey®, AlexaPure®, Aquacera®, Boroux®, British Berkefeld®, Doulton®, Patriot Pure®, ProOne®, Purewell® and Waterdrop®.

Yes. The activated carbon inside MaxClear filters is derived from coconut shell, a natural, environmentally friendly material known for its effective filtration properties. Coconut is a safe, non-leaching option that helps reduce contaminants and improve taste.