Big Berkey 2.25 Gallon
Score: 85/100
Bluevua RO100ROPOT
Score: 82/100Rankings
The Big Berkey is a gravity-fed countertop water filtration system constructed from surgical-grade stainless steel, designed to remove over 200 contaminants without requiring electricity. It offers a 2.25-gallon capacity suitable for small households or emergency preparedness, featuring expandable filtration options and a durable, nestable design. While praised for robust contaminant removal, the slow filtration speed and lack of official certification are notable trade-offs.
The Bluevua RO100ROPOT is a plug-and-play countertop reverse osmosis system that delivers high-purity water with 91% TDS reduction and real-time monitoring. Its main trade-off is the lack of built-in remineralization and UV sterilization in the base model, along with a moderate wastewater ratio. It is ideal for renters and apartment dwellers seeking installation-free pure water without plastic taste.
| Attribute | | |
|---|---|---|
— | 12 monthsbest | |
3.5 gallons per hourbest | — | |
— | 91 %best | |
2.25 gallonsbest | 0.45 gallons | |
— | 5 stagesbest | |
21 inchesbest | 14.3 inches | |
8.5 inches | 15.4 inchesbest | |
8.5 inches | 10.9 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance & Filtration(7) | ||
Certifications | NSF/ANSI 53 (Lab Tested) | ClimatePartner |
Contaminants Reduced | 200+ Contaminants | 99.99 |
Filtration Technology | Gravity-Fed Carbon | Reverse Osmosis |
Filter Lifespan (months) | 3000-6000 months | 12 months |
Flow Rate (gallons per hour) | 3.5 gallons per hour | gallons per hour |
TDS Reduction (%) | null % | 91 % |
Filtration Stages (stages) | null stages | 5 stages |
Capacity & Dimensions(5) | ||
Water Capacity (gallons) | 2.25 gallons | 0.45 gallons |
Height (inches) | 21.0 inches | 14.3 inches |
Width (inches) | 8.5 inches | 15.4 inches |
Depth (inches) | 8.5 inches | 10.9 inches |
Product Weight (pounds) | 7.0 pounds | 23.15 pounds |
Design & Installation(3) | ||
Housing Material | Stainless Steel | Glass |
Filter Type | Black Berkey | RO |
Power Requirement | None | Electric |
Products in the top-left offer the best value (high score, low price).
Professional reviewers and editors praise the Big Berkey for its robust contaminant removal capabilities, noting that it exceeds NSF/ANSI Standard 53 in laboratory settings. Experts highlight its durable stainless steel build and versatility for various water sources. However, they criticize the slow filtration flow rates and the lack of official NSF certification for the complete system.
Everyday users generally praise the Big Berkey for its reliability, long filter life, and ability to purify water without electricity, making it a favorite for families and emergency preparedness. Common recurring complaints include the slow filtration speed, which can take over two hours to fill, and the hassle involved in priming the filters.
“Solid countertop RO system with almost perfect lab results”
“Best for no-install pure RO”
Professional reviewers, including WaterFilterGuru and YouTube lab testers, rate the Bluevua RO100ROPOT highly for its contaminant reduction capabilities, noting a solid 91% TDS reduction in lab tests. Experts praise its ease of use and portability for those seeking installation-free pure water. However, they consistently note that the base model lacks UV sterilization and mineral addition, and its 2:1 waste ratio is average compared to higher-efficiency countertop competitors.
Everyday users generally appreciate the simplicity of operation and the purity of the water produced, often highlighting the convenience of the TDS display. Common praise focuses on the lack of plastic taste from the glass carafe and the ease of use in rental properties. Recurring complaints involve the slow filtration speed for large batches, the volume of wastewater produced, and concerns over the long-term cost of filter replacements.
