iSpring RO500AK-BN vs Waterdrop G3P600
Only the Waterdrop G3P600 is certified to reduce PFAS, lead, chlorine and fluoride. Verdict: the Waterdrop G3P600 for broader certified protection (5 vs 1 of the contaminants we track). Replacement filters and water for 2 people cost about $198 a year on the iSpring RO500AK-BN and $147 on the Waterdrop G3P600; they cost $693 and $539 to buy.
| iSpring RO500AK-BN | Waterdrop G3P600 | |
|---|---|---|
| Type | Under-sink reverse osmosis | Under-sink reverse osmosis |
| Price | $693 | $539 |
| Filters + water a year (2 people) | $198 | $147 |
| Filter cost per gallon (rated life) | — | 13¢ |
| Gallons per day | 500 | 600 |
| Pure to drain | 2:1 | 2:1 |
| Installation | diy | diy |
| PFAS | — | Certified |
| Lead | Brand test only | Certified |
| Chlorine | Brand test only | Certified |
| Fluoride | Brand test only | Certified |
| Arsenic | Brand test only | Brand test only |
| Chromium 6 | — | Brand test only |
| TDS | Certified | Certified |