Culligan Scout gravity system (2.25 gal) vs Ninja HydraSense
Only the Ninja HydraSense is certified to reduce mercury and VOCs. Verdict: the Ninja HydraSense for broader certified protection (7 vs 5 of the contaminants we track). Replacement filters and water for 2 people cost about $323 a year on the Culligan Scout gravity system (2.25 gal) and $80 on the Ninja HydraSense; they cost $230 and $250 to buy.
| Culligan Scout gravity system (2.25 gal) | Ninja HydraSense | |
|---|---|---|
| Type | Countertop filter | Countertop filter |
| Price | $230 | $250 |
| Filters + water a year (2 people) | $323 | $80 |
| Filter cost per gallon (rated life) | 158¢ | 33¢ |
| Gallons per day | — | — |
| Pure to drain | — | — |
| Installation | none | none |
| PFAS | Certified | Certified |
| Lead | Certified | Certified |
| Chlorine | Certified | Certified |
| Chloramine | Certified | Certified |
| Mercury | — | Certified |
| Microplastics | Certified | Certified |
| VOCs | — | Certified |