Does Berkey Filter Microplastics? 2026 Guide

Does Berkey Filter Microplastics? Yes — Here's the Proof

Berkey Water Filters equipped with Phoenix gravity filter elements remove up to 99.9%+ of microplastics from your drinking water. This has been verified through independent lab testing at NABL-accredited facilities certified to ISO/IEC 17025:2017. BB9 Black Berkey elements — which come standard with all Berkey systems — filter down to the nanometer scale (24–26 nm), far smaller than microplastic particles, though direct microplastic testing on BB9s has not yet been conducted.

That's the short answer. But microplastics are shaping up to be one of the most significant drinking water concerns of the decade — and the science is moving fast. Here's what you need to know in 2026.

What Are Microplastics (and Nanoplastics)?

Microplastics are plastic fragments smaller than 5 millimeters. They come from degrading plastic waste, synthetic clothing fibers released during washing, tire wear particles, food packaging, and personal care products.

Nanoplastics are even smaller — measured in billionths of a meter. These are the ones researchers are most concerned about because they're small enough to cross biological barriers, including cell membranes and the blood-brain barrier.

Common sources of microplastics in drinking water:

• Synthetic clothing fibers — A single load of laundry can shed 700,000+ microfibers into wastewater
• Degrading plastic waste — Bottles, bags, and packaging break down into smaller and smaller fragments
• Tire particles — Tire rubber shed on roads washes into waterways
• Water treatment infrastructure — Plastic pipes and fittings can contribute particles
• Bottled water packaging — Plastic bottles leach particles directly into the water they contain

Municipal water treatment plants weren't designed to filter particles this small. Some microplastics are removed during treatment, but nanoplastics largely pass through.

How Bad Is the Problem? The 2026 Numbers

The data on microplastic contamination has escalated rapidly:

The EPA's decision to add microplastics to the Contaminant Candidate List is significant. It doesn't create regulations yet, but it's the formal first step toward potential enforceable drinking water standards — the same path PFAS took before the EPA set limits in 2024. The final list is expected to be signed by November 2026.

What Microplastics Do to Your Body

The health research on microplastics has accelerated dramatically. While the full picture is still developing, recent findings are concerning enough that the federal government committed $144 million to investigate:

The Cardiovascular Evidence

A landmark study published in the New England Journal of Medicine in March 2024 examined carotid artery plaque from 304 surgery patients. Researchers found microplastics and nanoplastics — primarily polyethylene and PVC — in 58% of the plaque specimens.

Over 34 months of follow-up, patients with microplastics detected in their arterial plaque had a 4.5 times higher rate of heart attack, stroke, or death compared to those without detectable plastic.

A 2025 follow-up study from the University of New Mexico found that microplastic concentration in carotid arteries was 51 times higher in plaque from stroke and mini-stroke survivors compared to plaque-free arteries.

Where Microplastics Have Been Found in the Body

Researchers have now detected microplastics in virtually every organ system studied:

• Brain tissue — nanoplastics can cross the blood-brain barrier
• Heart and cardiovascular tissue
• Lungs
• Liver and kidneys
• Reproductive organs (testicles, placenta)
• Blood and lymph nodes
• Breastmilk and newborn meconium — meaning exposure begins before birth

Emerging Health Concerns

Based on current research, microplastic and nanoplastic exposure is being investigated for links to:

• Chronic inflammation and impaired immune function
• Cardiovascular disease (the NEJM study above)
• Reproductive health issues
• Digestive and respiratory problems
• Neurological effects — particularly from nanoplastics that cross the blood-brain barrier
• Potential cancer links — early research suggests associations with colon and lung cancer

How Phoenix Gravity Filters Remove Microplastics

The Phoenix Gravity Filter Elements use a dense coconut shell carbon block that creates a physical barrier too tight for microplastic fibers and particles to pass through.

Microplastics typically range from 1 to 5,000 microns. Even the smallest commonly measured microplastics (~1-3 microns) are larger than the effective filtration threshold of the Phoenix elements, which operate at 1.0 micron absolute pore size.

This means removal is primarily mechanical — the particles physically cannot fit through the filter media. It's the same principle as a screen door keeping out insects, except at a microscopic scale. No chemicals or electricity needed.

Lab-Verified Performance

Tap Water vs Bottled Water: Which Has More Microplastics?

Here's the irony: many people drink bottled water because they think it's cleaner. The data says otherwise.

The Columbia University study found approximately 240,000 detectable plastic fragments per liter of bottled water — 10 to 100 times more than previous estimates. Ninety percent of those were nanoplastics, the smallest and most biologically concerning type.

Tap water isn't microplastic-free either, but bottled water drinkers consume an estimated 90,000 additional particles per year compared to tap water drinkers. The plastic bottle itself is a significant source of contamination.

The practical takeaway: Filtered tap water from a gravity system gives you cleaner water than bottled water at a fraction of the long-term cost — and without generating plastic waste in the process.

How to Reduce Your Microplastic Exposure

Drinking water is the most controllable source of microplastic exposure, but it's not the only one. Here's a practical checklist:

• Filter your drinking water — A Berkey system with Phoenix elements removes up to 99.9%+ of microplastics. No electricity, no plumbing, no bottled water needed.
• Stop buying bottled water — It contains significantly more microplastics than tap water. Filter your own.
• Avoid heating food in plastic containers — Heat accelerates microplastic release. Use glass or ceramic for microwaving.
• Cut back on synthetic clothing — Choose natural fibers (cotton, wool, linen) when possible. Use a microfiber-catching laundry bag for synthetic items.
• Reduce plastic food packaging — Store food in glass containers. Avoid plastic wrap direct contact with food.

Frequently Asked Questions

Does boiling water remove microplastics?

Partially. A 2024 study published in Environmental Science & Technology Letters found that boiling water for 5 minutes can encapsulate some microplastics in calcium carbonate crystite formations (in hard water), which can then be filtered out with a simple coffee filter. However, this only works with hard water, doesn't address nanoplastics reliably, and adds significant time to every glass of water. Gravity filtration is more practical and thorough.

Do standard pitcher filters remove microplastics?

Some do, some don't. It depends entirely on the filter's pore size and design. Many basic carbon pitcher filters aren't tested or certified for microplastic removal. Gravity filtration systems with verified sub-micron filtration provide more reliable, tested performance.

Will the EPA regulate microplastics in drinking water?

It's heading that direction. Adding microplastics to the Contaminant Candidate List 6 in April 2026 is the formal first step. But the regulatory process is slow — PFAS took years from candidate listing to enforceable standards. In the meantime, point-of-use filtration is the most practical protection available.

How often do I need to replace the filters?

Phoenix elements are rated for up to 2,750 gallons per element (5,500 per pair). For a family of four, that typically means replacement every 12-24 months. Check our filter replacement guide for detailed maintenance schedules.

Does a Berkey also remove the chemicals that leach from microplastics?

Yes. Microplastics carry absorbed chemical pollutants including phthalates, BPA, and other endocrine disruptors. Phoenix elements are tested against 200+ contaminants including VOCs, pharmaceuticals, and chemical pollutants — so you're getting protection from both the physical particles and the chemicals they carry.

The Bottom Line

Microplastics are in your drinking water, your food, and your body. The EPA is beginning to take regulatory action, and the health research — particularly the NEJM cardiovascular study — suggests this isn't something to ignore while waiting for government standards.

Phoenix gravity filter elements remove up to 99.9%+ of microplastics through simple mechanical filtration, alongside 200+ other contaminants. No electricity, no plumbing, no plastic bottles. It's the most practical step you can take today to reduce your household's microplastic exposure.

Browse our full selection of Berkey Water Filters, or check our sizing guide to find the right model for your household.