Full side-by-side
| Spec | AlkaViva H2 Athena | Prime Water | Winner |
|---|---|---|---|
| Origin | USA (imported) | Korea | — |
| Distribution | Online · ships internationally | Sole authorised distributor | — |
| Category | Alkaline ionizer (US import) | Alkaline ionizer | — |
| Plates | 5 | 9 | Prime Water |
| pH (max alkaline) | 10.3 | 11.0 | Prime Water |
| ORP | -650 mV | -728 mV | Prime Water |
| Dissolved H₂ | 0.92 ppm | 1.34 ppm | Prime Water |
| Flow rate | 2.4 L/min | 4.0 L/min | Prime Water |
| Warranty | 5 yr | 5 yr | Tie |
| Filter cost (each) | S$ 220 | S$ 160 | Prime Water |
| Sticker price | S$ 3,200 | S$ 2,800 / S$ 99/mo | Prime Water |
| 5-year total | S$ 5,400 | S$ 5,940 | AlkaViva H2 Athena |
| Our rating | — | 4.7/5 | — |
Verdict
Cost over 5 years: AlkaViva H2 Athena saves S$ 540 over 5 years.
Lab performance: AlkaViva H2 Athena produces 0.92 ppm dissolved H₂; Prime Water produces 1.34 ppm. The Prime Water leads on hydrogen output.
Warranty: AlkaViva H2 Athena carries a 5-year warranty; Prime Water carries 5. Same warranty length.
What we recommend: Prime Water (Sole-distributor Korean ionizer, 5-year warranty, no MLM markup). We disclose owning this brand — the numbers above support the verdict, you can replicate any of them with the published methodology.
Where to buy + showroom info
AlkaViva H2 Athena
Online · ships internationally
Lineup: H2 Athena (5p) · Vesta H2 (8p) · Delphi H2 (7p)
Visit AlkaViva →Prime Water
Sole authorised distributor
Showroom: Singapore · by appointment via primewater.com.sg
Lineup: L Series · R Series · LV Series · RV Series
Visit Prime Water →Read our full review →
No affiliate links · Waterionizer.sg earns zero from either purchase.