AquaTru Under Sink Reverse Osmosis vs Big Berkey Gravity Water Filter
AquaTru Under Sink Reverse Osmosis vs Big Berkey Gravity Water Filter compared spec-by-spec. Filtration performance, flow rate, pricing, pros, cons, and our verdict on which water filter to buy.
| Specification | A — aquatru AquaTru Under Sink Reverse Osmosis 8.5/10 $395
Price unavailable
| |
|---|---|---|
| Filter Type | under-sink reverse osmosis | gravity |
| Contaminants Removed | PFAS, plus 84 total certified contaminants | bacteria, protozoa, chlorine, pesticides, pharmaceuticals, heavy metals, VOCs |
| Contaminants Certified Removed | 84 | — |
| Smart Leak Detection | Yes | — |
| Virus Removal | Yes | Yes |
| Capacity Gallons | — | 2.25 |
| Flow Rate Gph | — | 3.5 |
| Filter Life Gallons | — | 6,000 |
| Filter Elements Included | — | 2 |
| Max Filter Elements | — | 4 |
| Requires Power | — | No |
| Material | — | 304 stainless steel |
| Height Inches | — | 19.25 |
| Diameter Inches | — | 8.5 |
| Weight | — | 7 lbs |
| Serves People | — | 1-4 |
| Pf2 Fluoride Compatible | — | Yes |
Buy the AquaTru Under Sink Reverse Osmosis
Best prices · Updated hourly
Buy the Big Berkey Gravity Water Filter
Best prices · Updated hourly
Who Should Buy the AquaTru Under Sink Reverse Osmosis?
The AquaTru Under Sink Reverse Osmosis is designed for well water off grid, family use, under sink reverse osmosis. As a under-sink reverse osmosis, it removes viruses, bacteria, and protozoa for true purification-level protection.
Key advantages include: reverse-osmosis membrane certified to remove 84 contaminants, including pfas; under-sink install keeps the counter clear versus the countertop aquatru; smart leak detection guards against under-cabinet water damage.
Priced at $395, the AquaTru Under Sink Reverse Osmosis scores 8.5/10 in our testing — an excellent performer across our key metrics.
Who Should Buy the Big Berkey Gravity Water Filter?
The Big Berkey Gravity Water Filter is designed for gravity fed cabin, emergency preparedness. As a gravity, it removes viruses, bacteria, and protozoa for true purification-level protection.
Key advantages include: removes 200+ contaminants including viruses without electricity; 6,000-gallon filter life per pair — extremely low cost per gallon; stainless steel construction lasts decades. At 7 lbs, it's better suited for basecamp or vehicle-based use.
Priced at $280, the Big Berkey Gravity Water Filter scores 8.8/10 in our testing — an excellent performer across our key metrics.
How Do the Specs Compare?
Filter type: The AquaTru Under Sink Reverse Osmosis is a under-sink reverse osmosis while the Big Berkey Gravity Water Filter is a gravity. Different filter types suit different scenarios — consider your primary use case when choosing between them.
Filtration performance: The AquaTru Under Sink Reverse Osmosis scores higher on filtration at 9.5/10 versus 9.5/10 for the Big Berkey Gravity Water Filter. Both provide reliable protection for their intended use cases.
Price: The Big Berkey Gravity Water Filter costs $280 versus $395 for the AquaTru Under Sink Reverse Osmosis — a $115 difference. If the pricier unit offers significantly better filtration performance or longer filter life, the upfront cost difference often pays for itself over time.
🏆 Our Verdict
Choose the AquaTru Under Sink Reverse Osmosis if you need a reliable and proven filtration solution and premium build quality and features.
Choose the Big Berkey Gravity Water Filter if you prioritize value (typically $115 less) .
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