Bottom line: Of the mainstream pitcher brands, only the LifeStraw Home pitcher uses a filter technology — 0.2-micron hollow-fiber membrane — that physically blocks microplastic-sized particles. Brita, PUR, and ZeroWater use activated carbon or ion exchange and don’t carry NSF/ANSI P473 certification for microplastics.

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How the Major Pitchers Compare

Pitcher Technology Microplastic-certified? Best for
Brita Elite Longlast+ Activated carbon No Lead, chlorine, taste
PUR Plus Activated carbon + ion exchange No Lead, mercury reduction
ZeroWater 5-stage ion exchange No (catches some by chance) Lowest TDS, taste-sensitive users
LifeStraw Home 0.2μm hollow fiber + carbon Yes (particles >0.2μm) Microplastics, bacteria, parasites

The difference is pore size. Activated carbon and ion exchange catch contaminants by chemical attraction, not physical sieving — so particle removal is incidental. A 0.2-micron membrane catches anything physically larger than 0.2 microns regardless of chemistry.

What “0.2 Micron” Actually Catches

  • Microplastic fragments and fibers (typically 1μm–5mm)
  • Bacteria (most are 0.5–5μm)
  • Parasites (Giardia, Cryptosporidium)
  • Larger PFAS-bound particles

What it doesn’t catch: dissolved chemicals smaller than 0.2μm, including some nanoplastics, dissolved fluoride, and dissolved PFAS. For those, you need RO — see our AquaTru review.

What You Can Do

  1. Get the LifeStraw if a pitcher is your category. LifeStraw Home pitcher is the only mainstream pitcher with a membrane fine enough for microplastics. ~$50 for the pitcher; ~$25 per replacement filter every 40 gallons.
  2. Don’t combine with Brita expecting double protection. Pitchers in series don’t stack — water goes through whichever you pour into. Pick one.
  3. Upgrade to RO if nanoplastics worry you. Pitchers stop at 0.2μm. AquaTru Countertop RO (still no install) drops that to 0.0001μm and catches nanoplastics too.

Frequently Asked Questions

Which water filter pitcher actually removes microplastics?
LifeStraw Home is the only mainstream pitcher with a 0.2-micron hollow-fiber membrane that’s physically rated to block microplastic-sized particles. Brita, PUR, and ZeroWater are not certified to NSF/ANSI P473 and don’t publish microplastic removal data.
Does ZeroWater remove microplastics?
ZeroWater’s 5-stage ion-exchange filter is designed for total dissolved solids, not particulate matter. It may catch some microplastics incidentally but isn’t certified to NSF/ANSI P473. For microplastics specifically, LifeStraw Home’s 0.2μm membrane is the pitcher to use.
What's the cheapest microplastic-rated water filter?
LifeStraw Home pitcher at ~$50 is the lowest-cost option with documented microplastic-grade pore size. Below that price point, no consumer filter we’ve found carries credible microplastic certification.

For the full pitcher-vs-countertop-vs-under-sink comparison, see our guide to the best water filter to remove microplastics.

This article is for informational purposes only and does not constitute medical advice.

Source: Kosuth, M., Mason, S. A., & Wattenberg, E. V. “Anthropogenic contamination of tap water, beer, and sea salt.” PLOS ONE, Volume 13, Issue 4, 2018. DOI