When you buy a bottle of water at the supermarket, the price seems almost trivial. A few tens of cents per bottle rarely feels like a burden on the household budget. However, when you add up these purchases week after week, year after year, the result is often much higher than you might imagine.
Conversely, a filtration system represents a larger initial investment. This is, in fact, the first question most individuals ask themselves: is it really profitable in the long run?
The answer obviously depends on your water consumption, the number of people in your household, and the solution chosen. In this article, we will compare the real cost of bottled water and that of a water filter installed at home to determine at what point it becomes economically worthwhile.
Why bottled water costs more than you think
The main trap of water bottles is their daily cost. Spending a few euros while grocery shopping seems relatively trivial. Yet, these purchases repeat all year long.
Let's take the example of a person consuming about 2 liters of water per day. This amounts to 730 liters per year. The corresponding budget varies significantly depending on the brand, bottle size, promotions, and the chosen retailer.
| Type of bottled water | Indicative price per liter | Annual cost for 2 L/day | 5-year cost | 10-year cost |
|---|---|---|---|---|
| Store brand | €0.20 to €0.35/L | €146 to €256 | €730 to €1,278 | €1,460 to €2,555 |
| Major brand | €0.40 to €0.70/L | €292 to €511 | €1,460 to €2,555 | €2,920 to €5,110 |
| Premium water | €0.80 to €1.20/L | €584 to €876 | €2,920 to €4,380 | €5,840 to €8,760 |
Calculations based on a consumption of 2 liters per day, or 730 liters per year. Prices are indicative and may vary depending on brands, formats, retailers, and promotions.
This difference explains why there is no single answer to the question, "Is a water filter profitable?" A person who mainly buys budget-friendly bottles will not have the same return on investment as a household consuming major brands or premium waters. It is therefore better to compare the solutions based on your own consumption.
What does this budget represent for a family?
As soon as several people live under the same roof, the amounts increase very quickly.
Let's take a family consisting of two adults and two children. Considering an average consumption of 6 liters of water per day for the whole household, the annual cost becomes much higher.
Now let's take a family consisting of two adults and two children, consuming about 6 liters of water per day. This represents 2,190 liters per year, or 21,900 liters over ten years.
| Type of bottled water | Estimated annual cost | 5-year cost | 10-year cost |
|---|---|---|---|
| Store brand | €438 to €767 | €2,190 to €3,833 | €4,380 to €7,665 |
| Major brand | €876 to €1,533 | €4,380 to €7,665 | €8,760 to €15,330 |
| Premium water | €1,752 to €2,628 | €8,760 to €13,140 | €17,520 to €26,280 |
Calculations based on a family consumption of 6 liters per day. These estimates do not take into account potential increases in the price of bottles over the coming years.
Keep in mind: a family consuming 6 liters of bottled water per day uses approximately 21,900 liters of bottled water in ten years. Depending on the sizes purchased, this can represent several thousand bottles to transport, store, and then recycle.
These figures show that the price of an isolated bottle does not reflect the true budget spent on water over several years.
These figures are often surprising. Yet, they simply correspond to the accumulation of small daily expenses over a long period.
The price of bottles is only part of the cost
When comparing different solutions, we naturally think of the price displayed on the label. However, buying bottled water also generates many indirect costs.
You have to transport the packs to the car, then to your home. You must also provide sufficient storage space, especially for large families. Added to this are bottle recycling, additional trips to the store when supplies run low, and regular increases in the price of bottled water.
These elements do not appear on the receipt, but they represent time, logistical constraints, and a real cost to the household.
Furthermore, recent news regarding certain bottled waters has led many consumers to question their choice. If you are interested in this topic, you can consult our article dedicated to the Nestlé bottled water scandal, which reviews this affair and its consequences.
How much does a home water filter actually cost?
Unlike bottled water, a filtration system represents an initial investment. This is often what deters individuals when comparing different solutions.
Yet, the purchase price only tells part of the story. To know the real cost of a water filter, you must take into account its entire lifecycle: its acquisition price, maintenance, replacement of consumables, and its duration of use.
In the case of the FLX Compact, there are two possibilities:
- a direct purchase at €609;
- or a subscription plan at €59.99/month, with a €40 commissioning fee.
The choice depends on the budget, but also on how each person prefers to spread their investment over time.
Regardless of the option chosen, the logic remains different from that of water bottles: instead of buying new water every week, you are investing in a solution that treats the water available directly at your home.
When does a water filter become profitable?
To answer this question, let's look again at the case of a family consuming about 6 liters of water per day.
Depending on the type of water purchased, its annual budget can vary from approximately €438 for some store brands to more than €2,600 for premium waters. The time required to make a filtration solution profitable therefore depends directly on the household's habits.
For comparison, here is what this expense looks like over time.
| Family scenario | Bottle budget over 1 year | Bottle budget over 5 years | Bottle budget over 10 years |
|---|---|---|---|
| Store brands | €438 to €767 | €2,190 to €3,833 | €4,380 to €7,665 |
| Major brands | €876 to €1,533 | €4,380 to €7,665 | €8,760 to €15,330 |
| Premium waters | €1,752 to €2,628 | €8,760 to €13,140 | €17,520 to €26,280 |
Estimates based on a family consumption of 6 liters per day. To compare these amounts to the FLX Compact, you should add the cost of the consumables required during the studied period to its purchase price.
How to calculate your own bottled water budget?
To get an estimate corresponding to your habits, use the following formula:
Annual cost = daily consumption in liters × price per liter × 365
For example, a couple consuming 4 liters per day and buying water at €0.45 per liter spends approximately:
4 × 0.45 × 365 = €657 per year
Over five years, assuming the price of bottles does not increase, this represents approximately €3,285.
These figures mainly show one thing: the more a household consumes bottled water, the more likely a filtration system is to be economically worthwhile in the long term.
Conversely, a single person who occasionally buys a few bottles of water will not necessarily have the same return on investment.
What if we look over ten years?
The true benefit of a filtration system appears when you think in terms of several years.
Water bottles generate a recurring expense: every week, you have to buy new packs. This logic never changes.
With a filtration system, the main cost occurs at the start. Afterward, only maintenance operations and the replacement of consumables are added over the years.
This is called the Total Cost of Ownership. This method is widely used to compare equipment with different financing models.
In many cases, it provides a much more realistic view than the simple price displayed at the time of purchase.
Beyond price, what about daily comfort?
Comparing expenses alone is not enough. The choice between bottled water and a filtration system also depends on the comfort sought.
With water bottles, you regularly have to:
- buy new packs;
- transport them to your home;
- provide storage space;
- manage empty bottles and their recycling.
These constraints may seem trivial when taken separately. Added up over several years, however, they represent significant time and real logistics, especially for families.
Conversely, a filtration system installed directly on the water supply operates autonomously on a daily basis. It is no longer necessary to transport several tens of kilograms of bottles every week or provide space dedicated to their storage.
Price is not the only reason to change your habits
If many households today are choosing to reduce their bottled water consumption, it is not only for economic reasons.
Water quality has also become a major subject. Consumers are more interested in the possible presence of contaminants, the composition of the water they drink, and the treatment processes used.
Revelations concerning certain bottled waters have notably reinforced this awareness. They have shown that the trust placed in a brand does not exempt it from transparent information on the treatments applied to the water.
If you wish to explore this question further, our article Why switch from bottled water to water filtration? goes into detail about the motivations driving more and more individuals to change their consumption habits.
In which cases is a water filter most profitable?
There is no single answer. Profitability depends above all on the quantity of water consumed and the household's habits.
The higher the bottled water consumption, the more annual expenses increase. Conversely, a filtration system represents an investment that pays for itself gradually over time.
| Profile | Estimated consumption | Profitability of a filtration system |
|---|---|---|
| 1 person | ≈ 2 L/day | Interest varies depending on purchasing habits. |
| Couple | ≈ 4 L/day | Profitability becomes faster. |
| Family (4 people) | ≈ 6 to 8 L/day | The economic gain usually becomes more significant over several years. |
Beyond these estimates, everyone can perform their own calculation. Simply multiply your daily consumption by the average price of a liter of bottled water, then compare this amount to the cost of a filtration solution over the same period.
Cost is no longer the only criterion for choice
For a long time, bottled water was seen as the standard solution for good quality water. Today, the criteria for choice have evolved.
The price obviously remains important, but many consumers are also interested in:
- the quality of the water they consume;
- the possible presence of contaminants;
- the environmental impact of plastic bottles;
- everyday ease of use.
Revelations concerning certain bottled waters have notably reinforced this reflection. They have served as a reminder that not all marketed water is free from treatments and that transparency is an increasingly important criterion for consumers.
Our article dedicated to the Nestlé bottled water scandal reviews this affair and the questions it raises in detail.
Why are more and more households choosing filtration?
The growth of filtration systems is not only explained by the savings made.
Many individuals today are looking for a solution that allows them to have quality water directly from the tap, without having to buy, transport, and store several hundred bottles each year.
This is the logic behind the FLX Compact. Installed directly on the water supply, it works without electricity or chemicals and helps reduce many contaminants as well as tastes and odors present in the water. Its goal is to offer a sustainable solution while simplifying the daily lives of users.
If you wish to explore the subject further, we also invite you to consult our article Why switch from bottled water to water filtration?, which details the benefits of this shift in consumption habits.
Frequently asked questions
Is a water filter really cheaper than bottles?
In many households, especially families, the cumulative cost of bottled water over several years far exceeds the investment required for a filtration system. The result depends, however, on each household's consumption.
How long does it take for a water filter to be profitable?
There is no universal duration. The higher the consumption of bottled water, the faster the return on investment.
Do water bottles really cost that much?
Per unit, their price seems low. But accumulated over several years, they often represent several thousand euros for a family.
Is the maintenance cost of a filter significant?
Like any water treatment equipment, a filtration system requires regular maintenance and the replacement of its consumables. This cost must be integrated into the overall calculation to obtain a relevant comparison.
Which solution is the most worthwhile in the long term?
It all depends on your water consumption, your budget, and your expectations. For households consuming bottled water daily, a filtration solution often becomes economically advantageous when considering several years.
Conclusion
Comparing the price of a bottle of water to that of a water filter only at the time of purchase is misleading. To make an informed choice, you must consider several years and take into account all costs: purchase, maintenance, daily consumption, transport, and storage.
In many cases, especially for families, this approach shows that a filtration system can be an economically attractive solution while providing daily convenience. Before making your choice, the simplest way is to calculate your own consumption in order to objectively compare the different options.
Sources
- ADEME – Consumption and environmental impact of plastic bottles: https://www.ademe.fr
- Eaufrance – Data on drinking water in France: https://www.eaufrance.fr
- CLCV – Comparative studies on the cost of bottled water and tap water: https://www.clcv.org
- Ministry of Health – Quality of water intended for human consumption: https://sante.gouv.fr/sante-et-environnement/eaux
