Waterdrop vs Samsung: which is actually certified — and what does a certified gallon cost?
Last reviewed July 2026.
Same job, same shelf — but the certifications underneath are not the same. Here is Waterdrop against Samsung on the only two axes we score: what the certification actually covers, and what a certified gallon costs.
- Waterdrop: cheapest certified-for-lead filter is the WDS-F27 at $0.030/certified gallon (NSF, NSF/ANSI 42, 53).
- Samsung: holds NSF/ANSI 53 (lead), price pending — not yet rankable.
Every model, side by side
| Filter | Standards | Lead (53) | PFOA/PFOS | Certifier | $ / certified gal |
|---|---|---|---|---|---|
| Waterdrop WDS-F27 — Samsung DA29-00020B replacement (4-pack) WDS-F27 buy ↗ | 42 53 | ✓ | ✗ | NSF | $0.030 |
| Waterdrop Plus WDP — Samsung DA29-00020B replacement (3-pack) WDP-F27 brand ↗ | 42 53 401 | ✓ | ✓ | NSF | $0.044 |
| Waterdrop Plus WDP-UKF8001 — everydrop Filter 4 / EDR4RXD1 replacement WDP-UKF8001 buy ↗ | 42 53 401 | ✓ | ✓ | NSF | $0.117 |
| Waterdrop WD-F38 — everydrop EDR1RXD1 replacement (3-pack) WD-F38 brand ↗ | 42 | ✗ | ✗ | NSF | — |
| Samsung DA29-00020B Refrigerator Water Filter (HAF-CIN) DA29-00020B buy ↗ | 42 53 401 | ✓ | ✓ | NSF | — |
Price per filter ÷ certified capacity in gallons. Certification data from the certifiers' public listings; the listing always wins.
The full stories: Is Waterdrop NSF certified? · Is Samsung NSF certified? · what 42, 53 and 401 mean
We do not test filters — we index what accredited certifiers publish, with attribution, and make no health or treatment claims. A certification covers a specific model against a specific standard; it is not a general seal of quality. We are not affiliated with NSF International.
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