Many people wonder what kind of drinking water we should really be drinking, beyond simply clean water from a water purifier. Is it RO water or alkaline water? And how do the pros and cons of these two types differ?
What You Should Know About RO Water and Alkaline Water

What Is Alkaline Water?
Alkaline Water is water that has gone through a technological process to raise its pH to an alkaline level, from above 7.4 up to 9. This gives the water special properties, such as dissolving minerals better, fighting free radicals, and helping the digestive system work better.
What Is RO Water?
RO Water is water filtered with Reverse Osmosis (RO) technology, an ultra-fine filtration process that removes contaminants, bacteria, viruses, heavy metals, chemicals, and minerals from the water, leaving only 99.99% pure water.
Alkaline Water vs. RO Water: Whatâs the Difference?
| Alkaline Water | RO Water | |
| pH Level | 7.4 – 9 | 5.5 – 7 |
| Minerals | Contains minerals the body needs | No minerals |
| Taste | Clear and smooth | Flat |
| Special Properties | Dissolves minerals, has antioxidant properties, aids digestion | Clean, pure water |
| Price | Relatively high, but worth it | Moderate |
Sources of Alkaline Water
Alkaline water comes from two sources:
- Natural alkaline water: Found in groundwater, volcanic areas, and hot springs. Natural alkaline water contains dissolved minerals such as calcium, magnesium, and potassium.
- Alkaline water from water purifiers: Alkaline water purifiers use various technologies to raise the waterâs pH to an alkaline level, such as electrolysis, mineral addition, and special filter cartridges.
Who Is Alkaline Water For?
- People with health issues such as acid reflux, stomach disorders, or chronic bowel conditions
- Older adults
- Athletes
- Anyone looking to take care of their health
Benefits of Alkaline Water
- Fights free radicals, can slow aging, and reduces the risk of chronic disease
- Balances acidâalkaline levels
- Helps the body absorb minerals
- Good for digestion: Alkaline water is mildly alkaline, helping reduce stomach acid and relieve bloating, indigestion, and acid reflux.
- Nourishes the skin: Alkaline water helps keep skin hydrated and radiant, as it helps reduce free radicals and balance the skinâs acidâalkaline levels.
- Good for circulation: Alkaline water helps lower blood pressure and prevent heart disease, as it helps balance the bodyâs acidâalkaline levels.
- Strengthens the immune system: Alkaline water helps strengthen the immune system and prevent disease, as it helps reduce free radicals and balance the bodyâs acidâalkaline levels.
Alkaline water and RO water each have their own pros and cons, so choose the drinking water that best suits your needs and physical condition. If youâre looking for a Mitsubishi Cleansui alkaline water ionizer, we have one designed especially for you. Cleansui Alkaline Water Ionizer EU301 Comes with one EUC2000 cartridge that filters up to 8,000 liters or lasts 1 year per cartridge. Flow rate of 3 L/min, with adjustable pH (acidity/alkalinity) from 6 to 10.5.
The LCD display shows pH, filtered water volume, and reminder timer settings. It installs with its own faucet, while the cartridge and ionizer tuck neatly under the counter for a clutter-free, attractive kitchen. Interested? Just add our team as a friend on LINE at LINE: @cleansuithailand