The ultimate upgrade for your Berkey water filter system
Seamless replacements filters for your Berkey
Switching from Berkey to Culligan is easy. MaxClear™ Technology filters are universally compatible with the leading gravity systems, meaning you can keep your existing system while upgrading to better water filter technology. Enjoy cleaner water without the hassle.
Other filters don't stake up.
| Contaminants |
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|---|---|---|---|
| Microplastics | |||
| Lead | |||
| Total PFAS | |||
| Pharmaceuticals | |||
| Pesticides | |||
| Chlorine | |||
| Chloramine |
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.
Lead and total PFAS removal you can trust
Lead and Total PFAS (forever chemicals) are two of the most common concerns in tap water. MaxClear™ Technology filters are the only gravity water filters certified to reduce both contaminants to well below EPA action levels.Whereas Berkey lacks transparent testing, Culligan provides certified performance data from IAPMO so you can trust every drop. Culligan’s MaxClear™ Technology combines ceramic and activated carbon to remove up to 99% of lead and total PFAS detected in water supplies. Berkey can't say the same.
What people are saying
Anyone can say they filter water. Not everyone can prove it.
Removes 96% of
Microplastics
Removes 99% of
Lead
Removes 99% of
Total PFAS
Removes 99% of
Pharmaceuticals
Removes 97% of
Pesticides
Removes 99% of
Chlorine
Removes 99% of
Chloramine
Independently Tested. Expertly Trusted.
The countertop gravity water filter that fits your life
Culligan gravity systems fit seamlessly into your home, RV, or campsite. With a compact footprint , stainless steel spigot and a free metal stand to protect your kitchen, our systems make countertop use effortless. Berkey systems can take up more space and only come with a flimsy plastic spigot. Culligan makes clean water convenient and durable.
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MaxClear TechnologyScout 2.25 Gallon Gravity Countertop System
For smaller households (1-3 people)From -
MaxClear TechnologyVenture 3 Gallon Gravity Countertop System
For larger households (4+ people)From
Ready to swap into your Berkey system
We know you're put a lot into your gravity system. That's why MaxClear Technology filters are designed to fit seamlessly into Berkey and most other gravity filter devices. With an easy swap, you'll get cleaner, healthier water you can trust - without replacing what you already own. No tools, no hassle, just simple installation.
We never take shortcuts
For over 90 years, Culligan has been on a mission to provide clean, healthy, great-tasting water. We are committed to meeting the most rigorous safety standards so you can trust that our products are proven and reliable. Here's why IAPMO certification is better than third-party testing used by other brands:
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Highest standards
IAPMO certification uses NSF/ANSI standards, curated to worst-case conditions so our products work for all.
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Ongoing certification
IAPMO certification is renewed overtime to ensure our products are always working whilethird-party testing is only completed once and may notconform to any changes in industry standards.
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Real-world relevance
Third-party testing is not monitored and could use water that is dissimilar to what you might get out of your faucet.