Water Filter Cost Calculator
Volume I · May 2026 · 697 words
Compare the annual cost and cost per gallon of water filtration systems against bottled water. The calculator below accepts custom values or preset configurations for common filter types. For a detailed comparison of systems, see our water filtration comparison.
Cost per gallon (filtered)
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Annual filter cost: —
Annual bottled water equivalent: —
Annual savings vs bottled: —
System Cost Reference Table
| System | Filter Cost | Rated Gallons | Cost/Gal |
|---|---|---|---|
| Brita Standard | $6 | 40 | $0.15 |
| Brita Longlast+ | $17 | 120 | $0.14 |
| ZeroWater (hard water) | $14 | 20 | $0.70 |
| Clearly Filtered | $55 | 100 | $0.55 |
| APEC ROES-50 (annual) | $70/yr | 365 | $0.19 |
| AquaTru Countertop RO | $110/yr | 365 | $0.30 |
| ProOne Big+ Gravity | $80/pair | 1,000 | $0.08 |