Full side-by-side

AlkaViva H2 Athena Mfr claim · WaterSource GEM 9000 Mfr claim
SpecAlkaViva H2 AthenaWaterSource GEM 9000Winner
OriginUSA (imported)Singapore—
DistributionOnline · ships internationallyDirect retail · Evergreen Group subsidiary—
CategoryAlkaline ionizer (US import)Hydrogen-rich alkaline + portable—
Plates59WaterSource GEM 9000
pH (max alkaline)10.310.6WaterSource GEM 9000
ORP-650 mV-700 mVWaterSource GEM 9000
Dissolved H₂0.92 ppm1.2 ppmWaterSource GEM 9000
Flow rate2.4 L/min2.5 L/minWaterSource GEM 9000
Warranty5 yr2 yrAlkaViva H2 Athena
Filter cost (each)S$ 220S$ 220Tie
Sticker priceS$ 3,200S$ 4,999AlkaViva H2 Athena
5-year totalS$ 5,400S$ 7,199AlkaViva H2 Athena
Our rating———
How we sourced these numbers: All specs are taken directly from each manufacturer's published product page (links at the bottom). We have NOT independently lab-tested these brands — only Prime Water (our own sister brand) is verifiable through primewater.com.sg. Independent lab testing is rolling out through 2026.

Verdict

Cost over 5 years: AlkaViva H2 Athena saves S$ 1,799 over 5 years.

Lab performance: AlkaViva H2 Athena produces 0.92 ppm dissolved H₂; WaterSource GEM 9000 produces 1.2 ppm. The WaterSource GEM 9000 leads on hydrogen output.

Warranty: AlkaViva H2 Athena carries a 5-year warranty; WaterSource GEM 9000 carries 2. AlkaViva H2 Athena wins on coverage.

Where to buy + showroom info

AlkaViva H2 Athena

Online · ships internationally

Lineup: H2 Athena (5p) · Vesta H2 (8p) · Delphi H2 (7p)

Visit AlkaViva →

WaterSource GEM 9000

Direct retail · Evergreen Group subsidiary

Showroom: 8 New Industrial Road #01-02/03, LHK3, Singapore 536200

Phone: +65 8860 6951 · Hotline +65 9325 6199

Lineup: GEM 9000 ($4,999) · GEM 9090NT ($3,999) · H001 ($2,888) · H2 Cap Plus ($365) · Alkalark ($199) · Alkaliser ($158)

Visit WaterSource (Evergreen Group) →

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