Cost guide · prices checked August 2026
Sparkling water in Singapore: the real cost per litre
If you buy sparkling water in Singapore, you’re paying between S$1.50 and S$5.50 a litre depending on the label. Made at home, the same litre costs under sixty cents — after the machine pays for itself, which happens faster than most people guess. Here is the entire arithmetic, with every assumption on the table.
S$4.10
per litre, San Pellegrino by the bottle
S$0.53
per litre from a carbonator, 5-year average
~7 wks
for a S$169 machine to pay for itself at 1 L/day
What bottled sparkling water costs on a Singapore shelf
Supermarket prices move around, so treat these as the rounded street prices they are — checked August 2026 across the usual online grocers:
| What you buy | Shelf price | Cost per litre |
|---|---|---|
| Perrier, 330 ml | ~S$1.80 | ~S$5.50 |
| San Pellegrino, 750 ml | ~S$3.10 | ~S$4.10 |
| Mid-shelf imports, 1 L | ~S$2.50 | ~S$2.50 |
| Supermarket house brands, 500 ml–1.5 L | S$0.75–1.60 | ~S$0.75–1.50 |
A litre-a-day San Pellegrino habit is therefore a ~S$1,500-a-year subscription — before you count lugging glass bottles up to the flat, or the recycling run. Even the house brands compound to over S$500 a year.
The machine math, with assumptions you can check
Every home carbonation system — from a S$130 SodaStream to a built-in purifier — runs on the same consumable: a 0.6 L CO2 cylinder that carbonates roughly 60 litres of water. Everything below follows from four assumptions:
| Assumption | Value | Why |
|---|---|---|
| CO2 cylinder exchange | S$26 / 60 L | The going Singapore exchange rate for a standard 60 L cylinder — about S$0.43 per litre of fizz |
| Tap water | <S$0.01 / L | PUB tariffs make the water itself a rounding error |
| Consumption | 1 L / day | 365 L a year — a sparkling-with-dinner household; scale linearly for yours |
| Real fizz yield | ~85% | Nobody gets the rated 60 L — heavy-handed fizzing wastes gas, so we cost CO2 at ~S$0.50/L to be safe |
One, three and five years, side by side
Cumulative cost of a litre-a-day habit, hardware included. The carbonator line assumes a S$139 machine plus S$30 of spare bottles; the built-in line is the HydroSpark+ at S$2,988 with its annual filter at S$168 — more on that caveat below.
| Option | Year 1 | Year 3 | Year 5 | 5-yr cost / litre |
|---|---|---|---|---|
| Premium bottled | S$1,497 | S$4,490 | S$7,483 | S$4.10 |
| House-brand bottled | S$548 | S$1,643 | S$2,738 | S$1.50 |
| Manual carbonator | S$351 | S$716 | S$1,081 | S$0.59 |
| HydroSpark+ (built-in RO system) | S$3,338 | S$4,038 | S$4,738 | S$2.60 |
Break-even: when the machine is free
Against San Pellegrino, a S$169 carbonator setup saves about S$3.60 on every litre. It has paid for itself after 47 litres — about seven weeks at a litre a day. Against house-brand bottles the margin is thinner (about S$1 a litre), so break-even stretches to roughly five and a half months. Either way, year one ends with the machine ahead.
The honest caveat about built-in systems
Read the table straight: on fizz alone, a S$2,988 built-in system never beats a S$139 carbonator. Its five-year cost per sparkling litre is roughly five times higher. The case for a HydroSpark+-class machine is different: it’s a reverse-osmosis purifier that also replaces the kettle and the fridge jug — filtered still, hot and cold water all day, with sparkling as one output among four. If you were budgeting for an RO purifier anyway, the sparkling hardware is effectively free. If you weren’t, buy the carbonator.
CO2 refills in Singapore: the part nobody prices in
The recurring cost of every machine is the gas. Three things worth knowing before you commit:
- Exchange, don’t buy.A brand-new 60 L cylinder runs ~S$50; swapping your empty for a full one is ~S$25–28. Retailers and the brands themselves run exchange programmes in Singapore — factor the trip (or delivery fee) into your real cost.
- Check the valve before you buy the machine.SodaStream’s newer machines use its pink Quick Connect cylinder; older machines and most other brands use the screw-in type. An exchange network that stocks your valve matters more than any feature on the spec sheet.
- One cylinder is never enough. The gas always dies mid-week. Owners settle into a two-cylinder rotation — one in the machine, one full and waiting — which is S$50 of gas capital, once.
The bottom line
If sparkling water is a habit rather than an occasion, bottles are the most expensive way to drink it in Singapore. A manual carbonator collapses the cost from dollars to cents per litre and pays for itself inside two months against the premium labels. A built-in system is a purifier decision, not a fizz decision — and should be judged as one. Start with the machine type, not the brand.