Microplastics have emerged as a growing concern for households worldwide. Tiny fragments of plastic, often invisible to the naked eye, have been found in tap water, bottled water, and even in natural water sources. Research indicates that consistent ingestion of these particles may have long-term health effects, ranging from potential disruption of the endocrine system to chronic inflammation. While water utilities employ advanced purification systems, many microplastics, due to their minuscule size, can slip through conventional filtration methods.
This makes choosing the right water filter a critical step for those who are conscious of water quality. Not all water filters are created equal—some remove only large particulates, while others can reduce heavy metals, chemicals, and microplastics simultaneously. Filters that have been tested and certified specifically for microplastic reduction are particularly valuable, as they meet rigorous standards verified by third-party agencies.
In this guide, we have evaluated and ranked the best water filters for microplastics using objective, data-driven tests. Our focus is on certified filters, real-world performance, ease of use, and cost-effectiveness. Whether you are considering a countertop RO system, a ceramic gravity filter, or a simple pitcher, this guide will help you understand which products effectively reduce microplastics and other contaminants while remaining practical for everyday use.
Our Testing & Selection Process
To ensure our recommendations are accurate, we tested dozens of water filters using eight key performance metrics:
- Contaminant Reduction: How effectively the filter removes microplastics and other harmful particles.
- Design: Quality, durability, and materials that prevent reintroduction of plastics.
- Maintenance: Cost, frequency, and ease of replacing filters.
- Filtration Rate: Speed at which water is purified.
- Setup: Ease of installation without professional help.
- Component Quality: Materials, certifications, and build integrity.
- Certification Verification: Official NSF/ANSI 401, IAPMO, or WQA certifications for microplastics.
- Cost Efficiency: Price per gallon and long-term affordability.
Filters were eliminated from consideration if they lacked official microplastics certifications, were hard to source, or had significant performance flaws. Only products meeting strict certification standards and delivering consistent performance earned a spot on our final list.
Comparison Table
| Product | Overall Score | Price | Certifications | Filter Capacity | Cost per Gallon | Warranty |
|---|---|---|---|---|---|---|
| AquaTru Carafe | 9.57 | $349+ | NSF/ANSI 42, 53, 58, 401, 372 | 300–1,200 gallons | $0.19 | 1 year |
| AquaTru Classic | 9.54 | $449+ | NSF/ANSI 42, 53, 58, 401, 372 | 600–1,200 gallons | $0.11 | 1 year |
| British Berkefeld (Ultra Sterasyl Filter) | 8.64 | $156+ | NSF/ANSI 42, 53, 401, 372 | 800 gallons | $0.09 | Lifetime |
| Brita Elite | 6.59 | $40.99 | NSF/ANSI 42, 53 | 120 gallons | $0.17 | 1 year |
4 Best Water Filters That Remove Microplastics
AquaTru Carafe
Features:
The AquaTru Carafe is a countertop reverse osmosis system renowned for its complete contaminant removal, including microplastics down to 0.5 microns. It uses a four-stage RO process: a pre-carbon filter, RO membrane, post-carbon filter, and optional remineralization filter. What sets it apart is the glass water collection carafe, which avoids reintroducing microplastics after filtration. The system is compact, easy to assemble, and features a highly efficient 4:1 water recovery ratio, meaning minimal water is wasted during purification. Its IAPMO certification ensures it meets rigorous testing for microplastics and other harmful contaminants.
Pros & Cons
Pros
- Certified for microplastics and over 80 other contaminants
- Eliminates virtually all tested contaminants
- Glass carafe avoids plastic leaching
- Plug-and-play countertop design
- Efficient 4:1 water recovery
Cons
- Relatively high upfront cost ($349+)
- Filter lifespan is shorter than larger RO models
- Limited water storage (300–1,200 gallons per filter)
AquaTru Classic
Features:
The AquaTru Classic is the full-size counterpart to the Carafe. It offers the same four-stage RO filtration and certifications but includes a larger BPA-free plastic storage tank for higher daily water output. This system is ideal for families, as it can store up to 2.7 liters of purified water. The RO membrane and carbon filters work together to remove microplastics, chlorine, heavy metals, and other contaminants efficiently. Its simple installation and maintenance-free operation make it highly user-friendly.
Pros & Cons
Pros
- Certified for microplastics and 83+ contaminants
- Larger water capacity than the Carafe
- Same efficient 4:1 RO recovery ratio
- No invasive under-sink installation required
- Long-lasting filters reduce maintenance frequency
Cons
- Plastic tank (potential microplastic exposure over long-term use)
- Higher cost (~$449)
- Filtration rate slightly slower than Carafe
British Berkefeld (Ultra Sterasyl Filter)
Features:
The British Berkefeld uses a stainless steel gravity filtration system with the Ultra Sterasyl ceramic filter, officially certified for NSF/ANSI 401 microplastic reduction. It removes cysts, turbidity, and other particulates, while its activated carbon layer reduces chlorine and unpleasant tastes. Unlike RO systems, it requires no electricity, produces no wastewater, and is simple to set up. Stainless steel construction ensures minimal contact with plastics, making it a good option for microplastic-conscious users.
Pros & Cons
Pros
- NSF certified for microplastics removal
- Reduces cysts, turbidity, and other particulates
- Stainless steel prevents plastic contamination
- Lifetime warranty
- No electricity or complex installation needed
Cons
- Slower filtration rate (0.3 GPM)
- Limited contaminant removal compared to RO systems
- Moderate upfront cost (~$156)
Brita Elite
Features:
The Brita Elite is a water pitcher certified for microplastics reduction under WQA NSF/ANSI 401 standards. Its activated carbon filter targets chlorine, copper, barium, and microplastics. While convenient and cost-effective, the plastic pitcher may pose a risk of microplastic leaching if exposed to UV light or used beyond its recommended lifespan. The pitcher is lightweight, easy to fill, and ideal for households seeking a simple microplastics filtration solution.
Pros & Cons
Pros
- Certified for microplastics reduction
- Affordable ($40.99)
- Easy setup and maintenance
- Reduces chlorine, copper, and barium
- Portable and user-friendly
Cons
- Plastic pitcher may leach microplastics
- Limited contaminant removal compared to RO or ceramic systems
- Small capacity (120 gallons per filter)
Frequently Asked Questions
Which water filter removes microplastics most effectively?
Reverse osmosis systems like AquaTru Carafe and Classic are the most reliable, removing microplastics as small as 0.5 microns.
Do Brita filters remove microplastics?
Yes, the Brita Elite pitcher has NSF/ANSI 401 certification but is less effective than RO systems.
How long do microplastic filters last?
RO filters: 6–12 months. Ceramic filters: several years with proper maintenance.
Can plastic pitchers reintroduce microplastics?
Yes, using glass or stainless steel storage is safer.
Are all filters certified for microplastics?
No. Only filters with NSF/ANSI 401 or IAPMO certifications are officially tested.
Bottom Line
For the highest microplastic reduction, the AquaTru Carafe is our top pick due to its glass storage vessel and RO filtration. For larger households, the AquaTru Classic offers the same performance with higher capacity. British Berkefeld is ideal for those seeking a low-maintenance, electricity-free solution, while the Brita Elite pitcher provides an affordable, portable option for smaller households. Choosing the right filter depends on daily water usage, preference for plastic-free storage, and budget.