96.6
Best for long distance thru-hikers and weight-conscious backpackers
- Removes 99.999999% of bacteria
- Filters up to 100,000 gallons
- Fits standard soda and water bottles
$46
Head to head · Water Filtration
Big Berkey 2.25 Gal Gravity Water Filter System vs G3P600 Reverse Osmosis System
Ravvy scores Big Berkey 2.25 Gal Gravity Water Filter System at 89.51 and G3P600 Reverse Osmosis System at 92.51. G3P600 Reverse Osmosis System takes the overall pick, best for modern homeowners prioritizing cabinet space and water efficiency.
$367
The Big Berkey is the gold standard for independent water filtration, provided you are willing to manage the manual priming process and occasional maintenance of the filter elements.
Ravvy pick
Waterdrop
G3P600 Reverse Osmosis System
92.5
$429
A premium choice for those who want fast, tankless filtration and real-time quality monitoring, provided they have an electrical outlet and a slightly higher budget for replacement filters.
How they score
| Factor | Big Berkey 2.25 Gal Gravity Water Filter System | G3P600 Reverse Osmosis System |
|---|---|---|
| Portability | 85 | – |
| Build Quality | 93.5 | – |
| Long Term Value | 98 | – |
| Filtration Power | 95 | 96 |
| Setup Difficulty | 70 | – |
| Flow Rate | – | 88 |
| Space Saving | – | 98 |
| Water Efficiency | – | 95 |
| Installation Ease | – | 92 |
Big Berkey 2.25 Gal Gravity Water Filter System
What owners praise
- Extremely long filter life up to 6000 gallons
- No electricity or plumbing required for operation
- High quality 304 stainless steel construction
- Effective for both tap and raw untreated water
- Significant cost savings over time per gallon
What to know first
- High upfront investment cost
- Filter priming can be tedious for new users
- Slow filtration speed compared to tap systems
- Limited shipping availability in certain US states
Skip it if renters with very limited counter space or residents of california and iowa
G3P600 Reverse Osmosis System
What owners praise
- Efficient 2:1 pure-to-drain ratio minimizes water waste
- Tankless design saves 70 percent more space than traditional units
- Smart faucet provides instant TDS and filter life feedback
- Quick 3-second filter replacement requires no tools
- High flow rate fills a cup in about 8 seconds
What to know first
- Requires a dedicated power outlet under the sink
- Proprietary filters are more expensive than universal ones
- Pump noise is noticeable during operation
Skip it if off-grid homes without under-sink electrical outlets
Specs side by side
| Spec | Big Berkey 2.25 Gal Gravity Water Filter System | G3P600 Reverse Osmosis System |
|---|---|---|
| UPC | 197644669424 | 840814158555 840814161715 840814187616 |
| ASIN | B00CYW3EVO | B07P1XFYJP |
| GTIN | 197644669424 | 840814158555 840814161715 840814187616 |
| Brand | Berkey | Waterdrop |
| Capacity | 8.5 liters | 600 gallons |
| Material | Stainless Steel | 1.System cover: plastic 2.Faucet: metal 3.RO filter: reverse osmosis membrane & carbon block & pp cotton 4.CF filter: pp cotton & carbon block See more |
| Brand Name | Berkey | Waterdrop |
| Model Name | BER-BU2 | WD-G3P600 |
| Unit Count | 1 Count | 1 Count |
| Item Weight | 0.27 g | 32 pounds |
| Part Number | BER-BU2 | WD-G3P600 |
| Manufacturer | Berkey | Waterdrop |
Other options in this category
93.7
Membrane Solutions
Personal Water Filter Straw S1 4 Pack Blue
Best for backcountry hikers, international travelers, and disaster preparedness kits
- 0.1 Micron Ultrafiltration
- 5,000 Liter Capacity
- NSF 42, 372, and 401 Certified
$30
93.6
Best for health-conscious families and diy homeowners who dislike the taste of flat ro water
- Alkaline Remineralization Stage
- 75 Gallon Per Day Capacity
- Transparent Sediment Filter Housing
$235