Filter Ledger is a source-linked foundation for buying the right water-filter replacement. Updated October 1, 2026.
Foundation | Records | Costs | Methodology | Disclosure | For agents | llms.txt
Ownership cost, shown with its gaps
Only refill cost is estimated, from published prices. Tax, shipping and hardware are unknown and not counted as zero. These are illustrations, not recommendations.
| Scenario | Cartridge | Gallons/yr | Refill $/yr |
|---|---|---|---|
| Illustration only | brita-ob06 | 120 | $32.99 |
| Illustration only higher use | brita-ob06 | 365 | $50.17 |
Price source and date: see the Sources list in the dataset on the For agents page.
Working name. No original testing, payment or affiliate enrollment. The $1,000 monthly profit target is a goal, not a forecast.