Microplastics have been found in tap water across every country tested — including right here in Tennessee. Most standard filters don’t remove them. This guide covers the ones that actually do.
Quick answer
A reverse osmosis (RO) system is the gold standard for removing microplastics from drinking water. The best overall pick for most households is the AquaTru Carafe for countertop use, or the Waterdrop G3P800 if you want an under-sink system.
Not ready to commit to RO? The Clearly Filtered Pitcher is the best non-RO option with verified microplastics certification.
Keep reading for the full breakdown — including what to look for, what to avoid, and which filter fits your situation.
Why most filters won’t help
Here’s what the water filter industry doesn’t advertise: the majority of popular filters — including most Brita pitchers, fridge filters, and standard carbon filters — are not designed to remove microplastics.
Standard carbon filters work by attracting certain chemicals to their surface. But microplastics are physical particles, not dissolved chemicals. Unless a filter has a pore size small enough to physically block them, they pass straight through.
The only filter types proven to remove microplastics are:
- Reverse osmosis (RO) — pore size ~0.0001 microns. Removes up to 99% of microplastics.
- Ultrafiltration (UF) — pore size ~0.01–0.02 microns. Removes most microplastics.
- Certified sub-micron carbon block — pore size 0.5 microns. Removes a significant portion.
The key word in all of this is certified. Any brand can claim their filter removes microplastics. Look for NSF/ANSI 401 certification — this means an independent lab has verified at least 85% reduction of particles in the 0.5–1 micron range. [1]
The 5 best water filters for microplastics (2026)
1. AquaTru Carafe — Best overall
| Type | Countertop reverse osmosis |
|---|---|
| Price | ~$449 |
| Certification | NSF/ANSI 42, 53, 58, 401 |
The AquaTru Carafe is the top-performing water filter for microplastics available in 2026. In independent testing, it reduced 100% of all detected contaminants — an achievement no other filter in its class has matched. [2] It holds NSF/ANSI 401 certification for microplastics, along with certifications for 86 total contaminants including lead, PFAS, fluoride, arsenic, and chlorine.
What makes the Carafe model stand out over the standard AquaTru Classic is its glass collection container. Most RO systems filter your water and then store it in a plastic tank — which somewhat defeats the purpose if you’re trying to reduce plastic exposure. The glass carafe eliminates that concern entirely. [3]
Setup: No plumbing required. Plug in, fill the top reservoir, and it filters in under 15 minutes.
Best for: Homeowners and renters who want the highest level of microplastics protection without calling a plumber.
Pros
- NSF/ANSI 401 certified
- Glass carafe — no plastic contact post-filtration
- 100% contaminant reduction in independent testing
- No installation required
Cons
- Higher upfront cost (~$449)
- Filters need replacing every 6–12 months (~$80/year)
- Slower flow rate than under-sink systems
2. Waterdrop G3P800 — Best under-sink system
| Type | Under-sink reverse osmosis |
|---|---|
| Price | ~$349–$499 |
| Certification | NSF/ANSI 42, 53, 58, 372 |
The Waterdrop G3P800 is the best under-sink RO system for most families. Independent lab testing commissioned by Quality Water Lab — using fluorescence microscopy — found it reduced microplastics to non-detect levels across every particle size range tested. That’s as good as it gets.
The tankless design is a major practical advantage. Traditional RO systems use a large storage tank under your sink that takes up significant cabinet space. The G3P800 produces filtered water on demand, takes up minimal space, and uses a simple twist-and-pull filter replacement system that takes about two minutes.
The 800 GPD (gallons per day) flow rate means you’ll never wait for filtered water — it fills a glass almost instantly.
Best for: Families who want a permanent, high-performance solution and don’t mind basic under-sink installation.
Pros
- Lab-tested for microplastics (to non-detect levels)
- Tankless design — compact footprint
- Fast flow rate
- Filter replacements are straightforward
Cons
- Requires under-sink installation (DIY-friendly but not tool-free)
- Produces some wastewater (though efficient ratio vs. older systems)
3. Clearly Filtered Pitcher — Best non-RO option
| Type | Pitcher filter |
|---|---|
| Price | ~$90 |
| Certification | NSF/ANSI 42, 53, 244, 401 |
If a reverse osmosis system isn’t practical for your situation — you’re renting, you move frequently, or you just want something simple — the Clearly Filtered Pitcher is the only pitcher filter we recommend for microplastics protection.
It holds NSF/ANSI 401 certification and has a 0.5-micron rating, making it one of the few non-RO filters that can actually capture microplastic-sized particles. It also removes over 365 contaminants — including lead, PFAS, herbicides, and pharmaceuticals — which is exceptional for a pitcher.
Filter life is 100 gallons (roughly 3–4 months for a typical household), and replacement filters cost around $27 each.
Best for: Renters, frequent movers, or anyone who wants certified microplastics protection without any installation.
Pros
- NSF/ANSI 401 certified
- Removes 365+ contaminants
- No installation required
- More affordable upfront than RO systems
Cons
- Slower filtration than RO (gravity-fed)
- Smaller capacity than under-sink systems
- Won’t remove dissolved contaminants as thoroughly as RO
4. APEC ROES-50 — Best budget under-sink RO
| Type | Under-sink reverse osmosis |
|---|---|
| Price | ~$200–$250 |
| Certification | NSF/ANSI 58 (WQA certified) |
The APEC ROES-50 is the most affordable under-sink RO system worth recommending. It brought every critical contaminant — including lead, PFAS, arsenic, and uranium — down to undetectable levels in water quality lab tests. [4] Its five-stage filtration includes a carbon polishing stage that produces noticeably better-tasting water.
It’s more traditional in design (uses a storage tank rather than the tankless approach of the Waterdrop), which means a larger footprint under your sink and slightly slower fill times. But at roughly half the price of the Waterdrop G3P800, it’s excellent value.
Best for: Budget-conscious homeowners who are comfortable with basic plumbing and want proven RO performance.
Pros
- Significantly lower price than competing under-sink systems
- Excellent contaminant reduction across the board
- Great-tasting water (carbon polishing stage)
- Proven, reliable technology
Cons
- Uses a storage tank (larger footprint)
- Requires more involved installation
- Produces wastewater (roughly 3:1 waste-to-filtered ratio)
5. Brita Everyday Elite — Best entry-level certified option
| Type | Pitcher filter |
|---|---|
| Price | ~$35–$45 |
| Certification | NSF/ANSI 401 (via WQA) |
If you’re not ready to spend $90+ on a pitcher or $350+ on an RO system, the Brita Everyday Elite is the one Brita model certified to NSF/ANSI 401 for microplastics. It won’t give you RO-level protection, but it’s a meaningful upgrade over a standard Brita pitcher.
Important: not all Brita pitchers are NSF/ANSI 401 certified. The Everyday Elite is — other Brita models are not. Check the certification before buying.
Best for: People who want an entry-level step up from no filtration, on a tight budget.
Pros
- Very affordable
- NSF/ANSI 401 certified
- Widely available (Target, Walmart, Amazon)
- Easy to find replacement filters
Cons
- Less thorough than RO systems
- Slower filtration
- Replacement filter cost adds up over time
Filter type comparison
| Filter type | Microplastics removal | Avg cost | Installation |
|---|---|---|---|
| Reverse osmosis (under-sink) | Up to 99% | $200–$500 | DIY plumbing |
| Reverse osmosis (countertop) | Up to 99% | $350–$500 | None |
| Certified pitcher (sub-micron) | ~85%+ | $35–$90 | None |
| Standard carbon pitcher | Low/none | $25–$50 | None |
| Standard fridge filter | Low/none | $30–$60 | Basic |
What to look for when buying
NSF/ANSI 401 certification is non-negotiable. This is the only certification that specifically covers microplastics removal. NSF/ANSI 401 requires independent lab verification of at least 85% reduction of particles in the 0.5–1 micron range. If a filter doesn’t have it, the manufacturer’s claims are unverified. [1]
Check the micron rating. For meaningful microplastics protection without RO, you need a filter rated at 0.5 microns or smaller. Filters rated at 1 micron or above will miss a significant portion of microplastics.
Think about plastic contact post-filtration. If your RO system filters water and stores it in a plastic tank, you’ve solved one problem and potentially introduced another. Look for systems with stainless steel or glass storage, or a tankless design.
Factor in ongoing costs. A $200 system with $100/year in replacement filters costs more over three years than a $350 system with $50/year in filters. Calculate the total cost of ownership, not just the sticker price.
Frequently asked questions
Does boiling water remove microplastics?
No. Boiling kills bacteria and viruses but has no effect on plastic particles. Microplastics don’t evaporate — they remain in the water or concentrate as water boils off.
Is bottled water safer than tap water for microplastics?
Generally no — and often worse. Studies have found microplastics in bottled water from multiple major brands, in some cases at higher concentrations than tap water. The plastic bottles and caps themselves shed particles into the water. Filtered tap water from a certified RO system is a better choice than bottled water.
Does my Brita remove microplastics?
Most Brita pitchers do not. The Brita Everyday Elite is the only standard Brita pitcher certified to NSF/ANSI 401 for microplastics. Standard Brita pitchers use carbon filters designed for chlorine and taste improvement — not microplastics removal.
How often should I replace my filter?
Follow the manufacturer’s schedule — not the “when it tastes bad” approach. RO membranes typically last 2–3 years. Pre-filters and carbon filters usually need replacing every 6–12 months. A membrane that’s overdue for replacement becomes less effective at blocking contaminants even before taste changes.
Can I test my water for microplastics at home?
Not reliably yet. Professional lab testing (through services like Tap Score) is the only accurate option. A certified filter removes the need to test — if you have NSF/ANSI 401 certification, you know it works.
Bottom line
The best water filter for microplastics is one you’ll actually use consistently. If that’s a pitcher because it’s simple, get the Clearly Filtered. If you want the highest level of protection and don’t mind the installation, go with the Waterdrop G3P800 or AquaTru Carafe.
Whatever you choose, make sure it carries NSF/ANSI 401 certification. Everything else is marketing.
Sources
Disclosure: This article was last updated March 2026. Product prices and availability may vary. We may earn a commission if you purchase through links on this page — at no extra cost to you. We only recommend products we’d use ourselves.
