Full side-by-side
| Spec | Prime Water | WaterSource GEM 9000 | Winner |
|---|---|---|---|
| Origin | Korea | Singapore | — |
| Distribution | Sole authorised distributor | Direct retail · Evergreen Group subsidiary | — |
| Category | Alkaline ionizer | Hydrogen-rich alkaline + portable | — |
| Plates | 9 | 9 | Tie |
| pH (max alkaline) | 11.0 | 10.6 | Prime Water |
| ORP | -728 mV | -700 mV | Prime Water |
| Dissolved H₂ | 1.34 ppm | 1.2 ppm | Prime Water |
| Flow rate | 4.0 L/min | 2.5 L/min | Prime Water |
| Warranty | 5 yr | 2 yr | Prime Water |
| Filter cost (each) | S$ 160 | S$ 220 | Prime Water |
| Sticker price | S$ 2,800 / S$ 99/mo | S$ 4,999 | Prime Water |
| 5-year total | S$ 5,940 | S$ 7,199 | Prime Water |
| Our rating | 4.7/5 | — | — |
Verdict
Cost over 5 years: Prime Water saves S$ 1,259 over 5 years.
Lab performance: Prime Water produces 1.34 ppm dissolved H₂; WaterSource GEM 9000 produces 1.2 ppm. The Prime Water leads on hydrogen output.
Warranty: Prime Water carries a 5-year warranty; WaterSource GEM 9000 carries 2. Prime Water wins on coverage.
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
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 →
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) →No affiliate links · Waterionizer.sg earns zero from either purchase.