In today’s world, where environmental consciousness is rising, finding alternative, eco-friendly methods for everyday products has become essential. One such product is the plastic-free water filter, designed to provide clean, safe drinking water without contributing to plastic pollution. This article will explore plastic-free water filters, why they are a better choice, how to choose the best one for your home, and how to maintain and compare different types.

What is a plastic-free water filter?

A plastic-free water filter is a filtration system designed and constructed without using plastic materials, particularly in the components that come into contact with water. These filters provide a sustainable and environmentally friendly alternative to traditional plastic water filters.

Best Plastic Free Water Filters

Brondell Capela 

Brondell Capela water filter

Brondell, a key player in the US RO filtration market, has been at the forefront of innovation, addressing efficiency concerns in reverse osmosis (RO) systems. Their latest release, the H20+ Capella RC250, sets a new standard by achieving an impressive wastewater-to-clean water ratio of 1:1, making it nearly 20 times more efficient than conventional RO systems.

Filtration Performance: The Capella RC250 employs a robust three-stage filtration process, certified by the Water Quality Association according to NSF/ANSI standards. This thorough process effectively removes up to 86 contaminants, offering superior filtration compared to traditional 3-stage RO systems.

  • Stage 1: Activated Carbon Plus Filter
    • Removes up to 99.8% of particulate materials.
    • Significantly reduces chlorine content in water.
  • Stage 2: E2RO Membrane Filter
    • Eco-efficient RO membrane effectively removes contaminants.
    • Targets cysts, pentavalent arsenic, heavy metals, and more.
  • Stage 3: Carbon Block Filter
    • Final stage enhances taste and odor by reducing remaining contaminants.
    • Removes up to 98% of chlorine content.

Note: While highly effective against various contaminants, the membrane may not be suitable for filtering microbiologically unsafe water.

Flow Rate and Capacity:

  • Daily water production rate: 21.9 gallons per day.
  • Storage tank capacity: 3.2 gallons.
  • Water-saving technology achieves a 1:1 wastewater-to-clean water ratio, making it one of the most efficient RO systems available.

Installation and Maintenance:

  • Under-sink installation requires plumbing skills or professional assistance.
  • Water-saving technology reduces wastewater production significantly.
  • LED filter change indicator on the chrome air gap faucet simplifies maintenance, ensuring timely filter replacements.
  • Filters have varying lifespans, with the RO membrane requiring replacement every 24 months.


person pouring water in a onetime glass from Berkey water filter

The Big Berkey (Amazon), a stainless-steel portable water purification system, is revolutionizing water filtration for up to four users. Operating on gravity, this standalone unit eliminates faucet attachment, offering flexibility in any location with access to unfiltered tap water.

Key Features:

  • Various Sizes: Available in different sizes, from the compact Travel Berkey for 1-2 users to the spacious Crown Berkey catering to 6-10 users.
  • Size Reviewed: Opted for the Big Berkey designed for 2-4 people, standing 19.25” tall and 8.5”, slightly taller than conventional countertop filters.
  • Pricing Comparison: Pricier than competitors like ProOne Big+, Alexapure Pro, and Waterdrop King Tank. The anticipated annual maintenance cost is under $100.

Performance Evaluation:

  • Certification Concerns: Despite a strong user following, the Big Berkey lacks independent NSF/ANSI certification, a standard in our filter picks.
  • Testing and Results: After 50 hours of research and lab testing, inconsistent results were obtained, emphasizing the importance of standardized certification.
  • Filtration Claims: The manufacturer claims over a hundred contaminants were removed, but testing protocols varied, hindering precise comparisons.
  • Lead Filtration: Consistent findings suggest efficient lead removal, making the Big Berkey a potential solution for lead-related water issues.
  • PFAS Removal: Large activated carbon filters are expected to efficiently remove PFAS, confirmed by Environmental Working Group tests.

Manufacturer Engagement:

  • Communication Gap: Despite multiple requests, New Millennium Concepts, the Big Berkey’s manufacturer, did not respond to interview requests.
  • Opaque Understanding: The lack of manufacturer input contributes to an unclear understanding of the Berkey system, a departure from other filter manufacturers.


Kishu Charcoal

Kishu Charcoal (Amazon) is a valuable addition to water filtration routines, offering enhanced taste, reduced environmental impact, and versatile secondary uses. Its sustainable origins and practical benefits make it a compelling choice for those seeking a minimalist, Japanese-inspired, clean and refreshing water solution.

  • Sustainable Origins: Activated charcoal kiln-fired from sustainably harvested oak tree branches.
  • Toxin Absorption: Effectively absorbs tap water toxins, including lead, mercury, cadmium, copper, and chlorine.
  • Mineral Infusion: Imparts essential minerals like calcium, potassium, magnesium, and phosphates.

Usage Experience:

  • Comprehensive Solution: Addresses concerns about tap water quality, especially in older city pipes.
  • Compostable and Reusable: It lasts four months, is compostable, and offers secondary uses like deodorizing refrigerators or enhancing garden soil.
  • Effortless Integration: Simple application – drop it in your pitcher or water bottle.

Maintenance and Sustainability:

  • Boiling Schedule: Boil once a month to maintain pore openness and extend the stick’s life.
  • Zero Deterioration: Kishu Charcoal remains intact and practical, ensuring long-lasting use.

Second Life Applications:

  • Odor Absorption: Ideal for reducing refrigerator odors, outperforming traditional options like baking soda.
  • Garden Enhancement: Mix with garden soil to improve water absorption, providing a sustainable afterlife.


AQUA CREST water filter

Aquacrest (Amazon) water filters have gained widespread acclaim for their advanced filtration systems, providing a cost-effective alternative to original equipment manufacturer (OEM) filters. Known for their durability, high performance, and comprehensive water filtration, these aftermarket filters have become popular among users.

Filtration Excellence:

  • Lead and Heavy Metal Removal: Effectively removes lead and other heavy metals, ensuring the delivery of healthy and safe drinking water.
  • Chlorine Reduction: Significantly reduces chlorine, eliminating foul odors and enhancing the overall taste of water.

Key Features:

  1. Food-Grade Material:
    • Constructed from food-grade materials with coconut-activated carbon shells, ensuring safety for you and your family.
    • BPA free construction adds an extra layer of health-conscious design.
  2. Premium Purification:
    • Thoroughly filters organic and inorganic impurities, including heavy metals, rust, and pollutants.
    • Activated carbon removes organic impurities like bacteria and pathogens.
  3. PUR Filter Replacement:
    • Cost-effective replacement for PUR water filters, matching measurements and functional efficiency.
    • Package includes three affordable aftermarket filter cartridges.
  4. Improved Water Flow:
    • Enhances water flow without restrictions, providing a seamless experience after installation.
  5. Certifications:
    • Holds international certifications, including NSF and ANSI, ensuring chlorine reduction and lead removal.
    • Certifications guarantee the absence of harmful materials, instilling trust in its reliability.
  6. Refreshing Water:
    • Thoroughly eliminates dust and pollutants, creating crystal clear water without unpleasant odors or tastes.
    • Delivers refreshing and healthy water for your daily consumption.
  7. Minimal Design:
    • Compact dimensions (2.4 x 2.4 x 4.2 inches) with a sleek and minimalistic design.
    • Adds a touch of sophistication without overcrowding your faucet or sink.
  8. Limescale Elimination:
    • Unique feature that eliminates limescale from the water, prevents pot accumulation and ensures easy maintenance.
  9. Chlorine Removal Efficiency:
    • Highly efficient in removing chlorine, achieving up to 97.2% removal and improving water color and odor.
  10. Versatile Faucet Orientations:
    • Compatible with horizontal and vertical faucets, eliminating the need for replacements.
  11. Easy Installation:
    • Comes fully assembled, simplifying the installation process for quick and hassle-free setup.
  12. Lightweight and Leak-Proof:
    • Weighs only 0.51 pounds, placing minimal strain on the kitchen faucet.
    • Features a leak-proof construction, preventing water wastage and maintaining faucet integrity.

Reliability and Considerations:

  • Fine Particle Filtration: Effectively eliminates large dust particles but may allow excellent particles through, necessitating a secondary filtration process for heavily polluted water.
  • Frequent Replacement: Requires replacement every three months, which may be more frequent than some OEM filters. However, each package includes three filter cartridges, mitigating the need for regular purchases.

Care and Maintenance: Proper maintenance is crucial for ensuring the longevity and reliability of the Aquacrest water filter and a continuous supply of clean water.

ZeroWater Filter

ZeroWater Filter

Established in 2002 in California, ZeroWater (Amazon) is a filtration powerhouse committed to delivering water 99.6% free of total dissolved solids. With a mission to eradicate common impurities like lead and chlorine from tap water, the brand employs a patented 5-stage ion exchange filter, setting the stage for a tastier and more precise water experience. ZeroWater’s product range includes water filter pitchers, dispensers, and accessories, all contributing to the company’s goal of enhancing water quality.

Key Features:

  1. Effective Filtration:
    • Boasting a five-stage filtration system, ZeroWater removes virtually all dissolved solids from tap water, ensuring an unparalleled pure taste.
  2. Easy to Use:
    • ZeroWater filters are user-friendly and hassle-free. Fill the pitcher or dispenser with tap water, let it filter through the cartridge, and savor the transformed filtered water.
  3. Cost-Effective:
    • A cost-effective solution, ZeroWater is a savvy choice compared to consistently buying bottled water. Each filter can purify up to 40 gallons of water before replacement.
  4. Eco-Friendly:
    • Contributing to environmental sustainability, ZeroWater reduces plastic waste by eliminating the need for bottled water. An eco-conscious choice for those prioritizing a greener lifestyle.

Overall Assessment: ZeroWater emerges as a compelling option for individuals seeking an effective and eco-friendly method to filter tap water. Its patented 5-stage filtration system removes impurities, promising a pure-tasting water experience. While it may not be the fastest or the most budget-friendly choice, ZeroWater aligns with the values of those prioritizing purity and environmental consciousness in their water filtration journey. 

Why should you use a plastic-free water filter?

What are the disadvantages of plastic water filters?

Plastic water filters can leach harmful chemicals such as BPA and phthalates into the water, especially when exposed to heat or over time. These chemicals have been linked to various health risks, making plastic water filters less desirable for those seeking a healthier and safer alternative.

How does using a plastic-free water filter benefit the environment?

By choosing a plastic-free water filter, you contribute to reducing plastic pollution and its impact on marine life and the environment. Plastic-free filters are made with sustainable materials and are designed for long-term use, reducing the need for single-use plastic water bottles.

What contaminants can a plastic-free water filter remove?

Plastic-free water filters are capable of removing a wide range of contaminants commonly found in tap water, including chlorine, heavy metals, and other impurities. This ensures that the water you drink is not only free from plastic but also safe and clean.

Comparing different types of plastic-free water filters

Advantages and disadvantages of plastic-free water filter pitchers vs. dispenser units

Plastic-free water filter pitchers are more portable and convenient for smaller households, while dispenser units offer larger capacities and are suitable for serving water to multiple people. Each type has its advantages and limitations based on specific usage and preferences.

Comparing the effectiveness of plastic-free water filters in purifying tap water vs. bottled water

Plastic-free water filters are designed to effectively purify tap water by removing contaminants and impurities, making it safe and clean for drinking. This eliminates the need for bottled water, reducing reliance on single-use plastics and promoting eco-friendly living.


In the realm of water filters, Brondell Capella, Big Berkey, Kishu Charcoal, Aquacrest, and ZeroWater stand out as top-tier plastic-free options, delivering cleaner drinking water while championing environmental responsibility. With diverse solutions, from reverse osmosis to gravity-powered innovation and charcoal simplicity, these filters cater to varied preferences.

Beyond mere labels, they commit to a green footprint by genuinely providing pure water and reducing plastic impact. Their strengths lie in effective filtration, eco-friendliness, and user-friendly designs, presenting a comprehensive approach to clean water. Opting for these plastic-free filters isn’t just a choice; it’s a declaration—a commitment to a future where hydration aligns with personal well-being and environmental harmony. 

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