Where to Buy Distilled Water in Singapore — and When It's Cheaper to Make Your Own
You can buy distilled water in Singapore at FairPrice, Cold Storage, Sheng Siong, Guardian, Watsons, and on Shopee, Lazada or Amazon SG — typically S$1–S$3 per 1.5-litre bottle. That's fine for occasional use. But if you use distilled water every week — for a CPAP machine, steamer, humidifier or drinking — the arithmetic flips fast, and making your own becomes dramatically cheaper. Here's the full picture.
Where can you buy bottled distilled water in Singapore?
- Supermarkets — FairPrice, Cold Storage, Giant and Sheng Siong stock house-brand and imported distilled water in 1.5 L and 5 L bottles.
- Pharmacies — Guardian and Watsons carry distilled water, often positioned for CPAP and medical device users.
- Online marketplaces — Shopee, Lazada and Amazon SG list multi-bottle bundles with delivery; convenient, but you pay for shipping weight.
- Specialist suppliers — bulk delivery services supply offices, clinics and labs in 19 L formats.
Availability is not the problem. Recurring cost, plastic waste and hauling weight are.
When does a home distiller become cheaper than buying bottles?
For most weekly users, within the first year. Run the numbers for a CPAP user going through about 10 litres a month:
| Buying bottles | Making your own | |
|---|---|---|
| Cost per litre | ≈ S$0.70–S$2.00 | ≈ S$0.25–S$0.35 (electricity ~3.5 kWh per 4 L) |
| 10 L / month | S$84–S$240 per year | S$30–S$42 per year + consumables |
| 40 L / month (drinking household) | S$336–S$960 per year | S$120–S$168 per year + consumables |
| Trips to the shop | Weekly, carrying 5–10 kg | None |
| Plastic bottles | 100–300+ per year | Zero |
A household drinking distilled water daily can spend S$500–S$900+ a year on bottles — recurring forever. A one-time distiller purchase with a few dollars of charcoal sachets per month replaces all of it. Message us on WhatsApp for current unit pricing and we'll do your exact break-even with you.
Which distiller suits a Singapore home?
For CPAP and appliance use, the manual PWS 8-M Stream is enough — fill it, switch it on, collect up to 30 litres a day. For drinking water, choose an automatic model that maintains its own reserve: the 8-5 River (19 L reserve) suits couples, while the 12-20 Sea (76 L reserve) covers heavy household or clinic use. All units ship in 220–240V configuration, correct for Singapore outlets, and fit on an HDB kitchen countertop. Compare the full home distiller range.
What about clinics and businesses?
Dental practices and labs buying bulk distilled water should compare against the PWS 45-75 commercial distiller — 170–284 litres a day produced in-house ends the delivery-schedule dependency entirely. We supply and support from our Singapore location at Oxley Bizhub 1, Ubi Road 1.
Get your break-even calculation
Tell us how much distilled water you buy monthly — we'll reply with the exact model and payback period for your usage.
Chat on WhatsAppFrequently asked questions
Where can I buy distilled water in Singapore?
Major supermarkets (FairPrice, Cold Storage, Sheng Siong), pharmacies (Guardian, Watsons) and online marketplaces (Shopee, Lazada, Amazon SG) all sell bottled distilled water, typically in 1.5 L and 5 L bottles. For regular high-volume use, specialist suppliers deliver in bulk — or you can produce your own with a countertop distiller.
How much does distilled water cost in Singapore?
Bottled distilled water typically retails between S$1 and S$3 per 1.5-litre bottle depending on brand and format, i.e. roughly S$0.70–S$2.00 per litre. A home distiller produces it for roughly the cost of electricity — around S$0.25–S$0.35 per litre at current tariffs.
What do people use distilled water for in Singapore?
The most common uses are CPAP machines, steam irons and garment steamers, humidifiers, baby formula preparation, aquariums, car batteries, and laboratory or dental work — all applications where mineral scale or impurities cause problems.
