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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
Gravity Water Filter

High-performance filtration, compatible by design

Cleaner water you can trust starts with Culligan with MaxClear Technology replacement filters. Advanced ceramic and carbon filtration are designed to reduce microplastics, lead, total PFAS (forever chemicals), pharmaceuticals, pesticides, chlorine, and more—backed by certified performance.

With long filter life, simple replacement, and compatibility with most gravity filtration systems, each filter helps maintain consistent, high-quality filtration for everyday use.

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.

Real stories of proven superiority

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Culligan with MaxClear Technology

Gravity water filter systems compatible with MaxClear filters

While MaxClear gravity filters were engineered for universal compatibility, some systems may not support this filter design. Make sure our filters are compatible with your device.

MaxClear filters are likely compatible with your gravity system if:

  • 7" gravity filter

    Your gravity system can fit filters that are 7" tall.

  • Carbon or ceramic block

    Your filter is made from ceramic or carbon block filtration media designed for gravity filtration systems.

  • Upright filter installation

    Your filter sits upright in the upper container, allowing water to flow through into the lower chamber.

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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.

Culligan has provided water solutions for over 90 years, delivering confidence with every pour.

  • Water you can trust

    You deserve reliable, clean water for every day use

  • Advanced filtration

    Our filters target the contaminants that matter most

  • Certified performance

    Backed by IAMPO testing to meet NSF/ANSI standards

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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

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

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.



Not at all. A steady, controlled flow is part of the design. It allows for deeper filtration and more effective and powerful contaminant reduction.