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What does bottled water cost per year compared with a water filter at home?
Bottled water is a cost that keeps coming back. A water filter is a one-off purchase, followed by filter costs. So the real question isn't which looks cheapest, but where the break-even point lies — and that differs from one household to the next.
Use your own numbers
A single 0.5-litre bottle of a leading brand costs €0.99 at Albert Heijn and Jumbo (September 2026). For two people drinking 1.5 litres a day, that comes to well over €2,100 a year. Prices vary by brand, shop and bottle size, so run the numbers with your own receipt too. You only need three figures.
| What you need | Where to find it |
|---|---|
| Price per litre of bottled water | Your receipt: price divided by volume |
| Litres per day in your household | Number of people × how much each person drinks |
| Filter costs per year | Price of a filter set × number of sets per year |
The calculation
Your yearly spend on bottled water is: litres per day × 365 × price per litre. The yearly cost of a filter is: filter costs per year, plus the purchase price spread over the number of years you expect to use the unit.
Put those two side by side and you'll see straight away whether — and after how long — your household reaches the break-even point. If you don't drink much, it takes a while. If several of you drink bottled water every day, you'll get there faster.
What doesn't belong in the calculation
Water and electricity are your own budget, not measured consumption — a filter unit that heats or cools uses electricity, and how much depends on how you use it. The first filter set comes included with a unit, so it doesn't count as an extra saving in year one. And while lugging bottles, storing them and dealing with deposits are real hassles, they aren't amounts you can put a firm figure on.
Work it out yourself
The Osmora Premium product page has a calculator where you can enter these figures. The unit and filter prices come straight from our shop, so the result always reflects current pricing.
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Why are there no fixed amounts in this article?
Because bottle prices differ by shop, brand and size. That is why you calculate with your own till receipt; that is the only price that is right for you.
Do you include water and electricity?
In the calculator on our product page, you enter your own annual budget for water and electricity. That is your own assumption, not measured consumption.
When is the break-even point reached?
That depends on how much you drink and what you currently pay per litre. Divide the purchase price plus the filter costs per year by your annual consumption in litres and compare that price per litre.
Do you compare with tap water?
No. The comparison is about bottled water. Tap water itself costs a fraction of that; you buy a filter to do something about the composition or the taste, not to lower your tap water bill.