Replacement filter · countertop water filter
Big Berkey Gravity System: replacement cartridge
Here is the exact cartridge the Big Berkey Gravity System takes, its current price, how often to replace it, and what that works out to - ~$31/yr (about 1,100 gal) on our engine's math, not a guess.
What it costs to keep running
- Annual filter cost
- $31/yr
- Cost per gallon
- $0.028
This is the same figure our scoring engine uses on the Big Berkey Gravity System scorecard, computed from each cartridge's price and rated gallons across every stage. Prices last checked 2026-06-01.
The cartridge it takes
Black Berkey replacement elements (2-pack)
$166.00- Part number
- BB9-2
- Replace
- rated 6,000 gallons
- Price checked
- 2026-06-01
This model takes the brand cartridge; we found no confirmed generic equivalent, so buy the part that matches the number above.
Reorder links are Amazon affiliate links: FilterScored earns a commission at no extra cost to you. Affiliate relationships never influence a score, which is computed by an engine from published specs and verified certifications.
Prices and part numbers are the ones we last verified from the manufacturer or a retailer listing on the dates shown; check the current price at the link before reordering. The annual figure is our engine's computation from that data, not a statement of what you will pay.
Stay in the loop
From FilterScored
Updates from FilterScored, when there is something worth sharing.