APEC RO-PERM vs Waterdrop K19-H
Only the Waterdrop K19-H is certified to reduce TDS. Verdict: the Waterdrop K19-H for broader certified protection (1 vs 0 of the contaminants we track). Replacement filters and water for 2 people cost about $80 a year on the APEC RO-PERM and $70 on the Waterdrop K19-H; they cost $370 and $379 to buy.
| APEC RO-PERM | Waterdrop K19-H | |
|---|---|---|
| Type | Under-sink reverse osmosis | Countertop reverse osmosis |
| Price | $370 | $379 |
| Filters + water a year (2 people) | $80 | $70 |
| Filter cost per gallon (rated life) | — | 6.3¢ |
| Gallons per day | 90 | 75 |
| Pure to drain | — | 3:1 |
| Installation | diy | none |
| Lead | Brand test only | Brand test only |
| Chlorine | — | Brand test only |
| Chloramine | — | Brand test only |
| Fluoride | Brand test only | Brand test only |
| Arsenic | Brand test only | Brand test only |
| Nitrate | — | Brand test only |
| Chromium 6 | — | Brand test only |
| TDS | — | Certified |
| Bacteria and viruses | Brand test only | Brand test only |
| Copper | — | Brand test only |