Singapore's most trusted
alkaline water ionizer.
Backed by medical-grade Korean manufacturing and verified KFDA certification. "Water containing active hydrogen becomes a powerful antioxidant agent capable of protecting cells from oxidative damage." — Based on research by Dr. Sanetaka Shirahata, Kyushu University
What is a Prime Water alkaline water ionizer? Prime Water Singapore is the authorised dealer for Prime Water Co., Ltd Korea — a KFDA-certified medical device manufacturer producing alkaline water ionizers using electrolysis to transform tap water into ionized water with pH 8.8–10.9, negative ORP, and mineral-enriched hydration. Available to purchase (SGD $1,800–$3,700) or rent from $3.30 per day in Singapore.
What ionized alkaline water actually does.
Your body is 70% water. What that water carries — its pH, its charge, its mineral content — affects how it works at a cellular level. Ionized alkaline water gives you three properties that ordinary tap water cannot.
Antioxidant Potential
Our ionizers produce water with ORP up to −825mV — among the strongest antioxidant readings available from a residential ionizer. Negative ORP water helps counter free radicals generated by stress, poor sleep, and processed food.
Dissolved Hydrogen (H₂)
Prime Water ionizers produce 1.0–1.6 ppm of dissolved molecular hydrogen — within the therapeutic range studied in peer-reviewed research. H₂ is the smallest antioxidant molecule known, rapidly absorbed and acting selectively on the most harmful free radicals.
Alkaline pH Range
Our ionizers give you precise control over your water's pH — from drinking levels (pH 8.8–9.5) to food preparation and cleaning (pH 10–11+). The alkaline minerals released during ionization also increase beneficial TDS by 5–20 points.
The field of hydrogen water science has produced over 1,000 peer-reviewed studies across Japan, Korea, and Europe examining H₂'s potential effects on oxidative stress, exercise recovery, and metabolic markers. Prime Water ionizers deliver measurable H₂, ORP, and pH — properties you can verify with any quality water testing meter.
Built to the standard of a medical device.
KFDA Certified
Prime Water Co., Ltd Korea is certified by South Korea's Ministry of Food and Drug Safety (MFDS/KFDA) to manufacture water ionizers as medical devices under the Medical Device Act. This is one of the most stringent quality standards applied to any consumer water device globally.
SMPS Technology
Switch Mode Power Supply technology delivers fully adjustable power — up to 450W — adapting to any water type in Singapore without overheating. SMPS ionizers consistently outperform transformer-based units for pH range and ORP output across varying water quality.
Platinum-Titanium Plates
Our plates are medical-grade titanium coated with 99.99% pure platinum — the same specification required for medical implant-grade electrolysis. Platinum ensures electrochemical stability, longevity, and clean ionization with no contamination of the water.
ISO Certified Factory
Our manufacturing facility holds ISO 9001 (Quality Management System) and ISO 14001 (Environmental Management System) certification — ensuring every unit is built to consistent, internationally audited standards of quality and environmental responsibility.
Decades of science behind ionized water.
The field of water ionization and hydrogen water research spans 70 years and draws from the work of leading scientists in electrochemistry, gastroenterology, and molecular biology. Here are the key researchers whose work underpins this field.
Dr. Machisue Suwa
Developed the first functional water electrolysis device, proving that electricity could produce water with measurable reduction potential — the foundation of all modern ionizers.
Dr. Sanetaka Shirahata
Identified "active hydrogen" in reduced water as a powerful antioxidant agent capable of protecting cells from oxidative damage — one of the earliest peer-reviewed hydrogen water studies.
Dr. Hidemitsu Hayashi
Shifted focus to molecular hydrogen (H₂) as the active agent in ionized water, laying the groundwork for over 1,000 subsequent peer-reviewed studies on H₂'s biological effects.
Dr. Peter Agre
Discovered aquaporin water channels — specialized proteins that allow water to enter cells rapidly in a single-file stream. His work explains how water transport at the cellular level is governed by molecular properties.
Dr. Hiromi Shinya
World-renowned gastroenterologist who observed the relationship between patients' water intake and digestive health across decades of clinical endoscopy practice.
Dr. Mu Shik Jhon
Pioneer in research on the structural properties of water and how its molecular arrangement influences biological function — contributing foundational concepts to the study of water's interaction with living systems.
The researchers above are academic contributors to the field of water science and hydrogen research. They are not endorsers of Prime Water products. Their published work is publicly available and independently verifiable. We present their research as the scientific foundation of the field — not as personal recommendations.
Find your Prime Water model.
Four models — all KFDA-certified, all SMPS-powered — designed for different kitchen configurations and usage preferences.
Not sure which model suits your home? Our specialist will recommend the right fit during your free home demo.
Real readings. Real numbers.
These are actual H₂ measurements taken from Prime Water ionizers using a professional dissolved hydrogen meter. Readings are in ppb (parts per billion). 1,000 ppb = 1.0 ppm.
Studies on molecular hydrogen typically reference concentrations of 0.5–1.6 ppm. All Prime Water models with 9 plates and above measure above 1.0 ppm at alkaline level 3 & 4 — within the range studied in peer-reviewed research. Verify these readings yourself at your free home demo.
How Prime Water stacks up.
Not all water solutions are equal. Here is a straightforward comparison of what each type of system actually delivers.
| Feature | Hot/Cold Dispenser | Carbon Filter | Prime Water Ionizer |
|---|---|---|---|
| Removes chlorine & sediment | Partial | Yes | Yes — multi-stage |
| Dissolved H₂ (antioxidant) | None | None | 1.0–1.6 ppm (verified) |
| Negative ORP | No | No | Up to −800mV |
| Adjustable alkaline pH | No | No | Yes — 8.8 to 10.9 |
| Acidic water (cleaning/skincare) | No | No | Yes — pH 2.5 disinfectant |
| Medical device certification | No | No | KFDA certified factory |
| Rental option available | Some brands | No | Yes — from $3.30/day |
| Cost — basic tabletop dispenser | $60–$500 | $50–$300 | $1,800–$3,700 |
| Cost — pipe-in, filtered dispenser | $800–$2,400 | N/A | |
| Best for | Convenience-first homes | Light filtration on a budget | H₂ + full filtration buyers |
Rent a Prime Water ionizer.
That's $99/month - less than two bottles of water a day. Includes installation and calibration, regular deep cleaning, 4 filters for DIY filter changes per year. Minimum rental 12 months with a refundable deposit. Upgrade or return anytime after 12 months.
Start Renting →Frequently asked questions.
Honest answers to what our customers actually want to know before buying or renting.
Ready to experience the difference?
We come to you. See pH, ORP, and hydrogen output tested live at your home — no travel, no pressure, just proof.
Book a free home demo
We come to you. Our specialist tests your tap water live — H₂ ppm, ORP, and pH measured in front of you, at your home. 90 minutes, no obligation to buy.
Book Free Home Demo →Rent an ionizer
Try before you buy. Includes installation and deep cleaning maintenance.
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+65 80624718Health Disclaimer This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before making changes to your diet or health regimen. Prime Water ionizers are wellness appliances. Statements on this page reflect publicly available research and have not been evaluated by the Singapore Health Sciences Authority.