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Install a under-sink water filterWhen you use a tap water system, you say goodbye to bulky, polluting packs of plastic bottles and doubts about the quality of tap water, and you do something that's good for your health and good for the planet. Discreet, practical and efficient, this system is winning over more and more households looking for a sustainable, healthy and ecological solution.
And LAVIE's Opropre range ticks all the boxes: efficiency, longevity, ease of use... In other words, it's a concentrate of benefits for you, your family and the environment.
But of all the options available, which are the most reliable and reliable? tailored to your needs?
We'll help you choose the best under-sink water filter with confidence.
When it comes to purifying tap water There are several options available to you for an under-sink filter: osmosis, the classic under-sink filter, the Opropre range... But not all are created equal. We take a closer look at the different systems in this article. comparison of water filters.
Between efficiency, maintenance, ecological impact and cost, there are major differences that directly influence the quality of the water you drink every day. Each system has its advantages, disadvantages and limitations, especially when it comes to your health or the environment.
Here's a clear and accessible comparison to help you make the best choice.
| System | Osmosis unit | Classic under-sink water filter |
Opropre Turquoise LAVIE |
| Type of filtration | Reverse osmosis | Ceramic membrane + activated carbon | Activated carbon + anti PFAS resin |
| Water quality | 💧 | 💧💧 | 💧💧💧 |
| Filtered elements | Chlorine Sediment Bacteria and viruses Heavy metals Pesticides Trace elements | Chlorine Sediment Heavy metals | Chlorine Sediment Heavy metals Microplastics and nanoplastics Pesticides PFAS |
| Difficulty of installation | ❌ Complex (Professional recommended) | ✅ Easy | ✅ Easy |
| Ecological impact | ❌ Very high : Discharge of polluted water (3-4 L per litre purified) + disposable filters + disposable membrane | ❌ High : non-recyclable filter with concentration of pollutants. | ✅ Limited : Returnable and refillable LAVIE cartridges. Recycled activated carbon. |
| Initial cost | €€€ | €€ | €€ |
| Recurring costs | €€ (Regular maintenance by a professional, cost of consumables) | € (Filter to be changed every 6 months) | € (Filter to be changed every 6 months) |
| Discover |
Each filtration system has its own specific features, promises and limitations. To make an informed choice, it's essential to understand what each one really offers in terms of performance, practicality, cost and ecology.
Let's take a look at these under-sink filters to find the one that's best suited to your lifestyle.
L'water osmosis is often described as the ultimate in under-sink filtration. Thanks to its semi-permeable membrane, it is capable of eliminating the vast majority of contaminants present in water: chlorine, heavy metals, pesticides, viruses, bacteria, etc. But it also filters out the good minerals such as calcium and magnesium. As a result, the water comes out of the tap depleted in trace elements, too acidic and generally requiring remineralisation, which is only possible with top-of-the-range models, and still with low levels of minerals, below the recommendations of the World Health Organisation.
What's more, by removing chlorine, your water becomes more vulnerable to bacteria. This can lead to rapid proliferation in tanks or outlet pipes as a result of stagnation and the absence of disinfectant protection.
Added to this are a number of constraints: complex installation requiring the intervention of a professional, regular maintenance (sediment filter, membrane, remineralisation filter, etc.), space requirements and high overall cost.
But that's not all! Its ecological impact is hard to ignore: to produce 1 litre of filtered water, the osmosis unit discharges between 2 and 4 litres of polluted water.
To sum up: the osmosis plant offers highly advanced filtrationBut at the cost of many compromises, both for you and for the planet. Not to mention a very high cost per litre.
Conventional" under-sink water filters are made up of a activated carbon filter cartridge and/or a ceramic membrane. Their mission? Retain chlorine, sediment and certain heavy metals, while improving the taste of the water. Practical and easy to installThis filtration system is a positive response to concerns about your tap water.
But they are only partially effective. These filters do not remove bacteria, viruses or persistent pollutants such as PFAS. What's more, poor-quality activated carbon, particularly that of fossil origin, can release compounds that are far more dangerous than the pollutants it is supposed to 'adsorb'.
From an ecological point of view, the results are also mixed: the filter cartridges, which are non-recyclable and concentrate pollutants, have to be changed every six months. The result is more waste in the environment.
And if not properly maintained, these filters can even become a breeding ground for bacteria. Not ideal for healthy drinking water.
LAVIE's Opropre Turquoise filters push back the limits of filtration. Thanks to a high quality coconut activated carbonThey have the capacity to effectively eliminate chlorine, sediments, heavy metals, pesticides, microplastics, nanoplastics and even PFAS (eternal pollutants), supporting tests and results) for the Turquoise model, while preserving the essential minerals.
Their real strength? A returnable, refillable and recyclable cartridge, designed to last 6 months. Once used, you return it to LAVIE: it is refilled with new activated carbon, while the used cartridge is recycled in specialised industrial circuits. For the Turquoise model, the resin targeted at PFAS follows the same process.
This environmentally-friendly system drastically reduces waste while guaranteeing healthy, pleasant drinking water at home. Easy to install, Opropre filters combine performance, environmental responsibility and peace of mind.
Choosing an under-sink water filter is not just a matter of comparing prices or brands. A number of criteria need to be taken into account to find the best solution to your daily life, your budget and your personal commitments. Here's a comprehensive buying guide to help you make an informed, sustainable and truly effective choice.
Le price of a water filter The price of an under-sink unit can vary by a factor of three, depending on the technology used, the materials chosen and the options on offer. The most affordable models start at around €50, while more complete and durable systems can cost between €200 and €250.
But beware: the purchase price isn't everything! It's essential to think in the long term. You also need to take into account the cost of refills, how often they need to be replaced and, in some cases, the services of a professional, particularly in the case of reverse osmosis systems. Most filters need changing every 6 months. However, our Opropre range uses returnable and refillable filter cartridges to limit expenditure and waste.
The best system is the one that combines efficiency, sustainability and economy over several years.
Not all filters are created equal, especially when it comes to protect your body without depleting your water. Before buying your product, it's best to check what the device is actually capable of retaining. And what about invisible, persistent pollutants such as PFAS or nanoplastics?
The Opropre range goes further than conventional products on the market. Its filters effectively eliminate a broad spectrum of contaminants while preserving essential minerals to your body (calcium, magnesium). This is a performance that is often overlooked, yet crucial for healthy, complete hydration.
A good under-sink filter purifies water without depriving it of its natural benefits.
Installing an under-sink water filter means making the choice to discretion and efficiency. But not all models require the same effort to set up.
An osmosis plant, for example, requires a complex installation. Space is needed for the tank, the various filters and the pipework. It's often best to call in a professional. What's more, this type of appliance also requires regular maintenance, with replacement of components.
In contrast, the Opropre range of under-sink filtration systems is much simpler to install. The kit is usually complete, with hoses and fittings included. All you have to do is connect the cold water inlet to the filter, then the filter outlet to the tap. It's easy to do, without special skills.
If you're looking for an option that's practical, reliable and quick to install, it's best to turn to solutions like Opropre.
Not all filtration systems are the same. ecological impact. A reverse osmosis system, for example, can reject up to 4 litres of polluted water for every litre filtered, and requires disposable cartridges that cannot be recycled. Conventional under-sink filters, on the other hand, use single-use cartridges that have to be replaced every 6 months. The result: regular waste and a concentration of pollutants. A real ecological nonsense!
LAVIE's Opropre range, on the other hand, has been designed to minimise its environmental footprint. The cartridges are returnable, then refilled with new activated carbon and recycled through specialised channels. The resin in the Turquoise model is treated in a similar way.
So, by choosing a responsible and sustainable systemYou can purify your water and reduce waste at the same time.
LAVIE's Opropre filters are reliable and durable solutions for purify your tap water naturallyday after day. This is the Opropre Turquoise.
It is based on a high-performance coconut activated carbon, capable of retain pollutants and impurities such as chlorine, pesticides, heavy metals and microplastics, as well as chlorothalonil, volatile organic compounds (VOCs), metolachlores ESA and OXA and endocrine disruptors. The Turquoise model goes much further, by also filtering out PFAS, the eternal pollutants that are a major health concern.
The little extra we're proud of? The system of returnable cartridges: once used, they are returned, recharged and put back into circulation. Zero waste.
Easy to install, discreet and built to last, Opropre solutions fit naturally into your home.
With Opropre, you're making a responsible, solid and truly effective choice for your health.
Today, there are many ways to filter the water in your home. Whether it's a carafe filter, a tap-mounted filter, a water softener or an under-sink appliance, each solution has its own particularities, advantages and limitations.
But between performance, size, cost and environmental impact, it's not always easy to know what to do. which option is best to its needs.
So, under-sink filter or other filtration system? Let's find out.
At first glance, filter carafes appear to be a simple and economical option for improving the quality of tap water. Their technology is based on a cartridge composed of activated carbon and ion exchange resins, enclosed in a plastic block enriched with silver particles. While this mixture eliminates chlorine, organic residues and other pollutants, it also removes calcium and magnesium, which are essential to our health.
LAVIE's Opropre filters, on the other hand, use high-quality coconut activated carbon, and the amount stored is around 15 times greater than that of a jug filter. They have the capacity to effectively retain chlorine, pesticides, heavy metals, microplastics and even PFAS (for the Turquoise product), while preserving the good minerals.
But that's not all. By removing the chlorine, conventional filter carafes also remove the natural protection against bacteria. Without regular cleaning and rigorous filter replacement, the water becomes a veritable nest of bacteria in less than 48 hours.
And the environmental record is far from ideal: disposable cartridges that are not recycled, frequent replacement and the possible release of microplastics from the block.
For a complete result, LAVIE offers a winning duo LAVIE: combine the Opropre filter with the LAVIE UV-A purifier. Thanks to its UV-A light, the latter neutralises viruses, bacteria and chemical residues (viruses and bacteria are not eliminated by activated carbon), while preserving minerals.
Tap-mounted filters have a lot going for them: they're quick and easy to install, and compact, effective against chlorineIt also eliminates odours, heavy metals and microplastics, while preserving essential minerals. What's more, some models, such as those made from stainless steel, are strong and durable.
But their design remains limited. Flow is often reduced, cartridges need to be replaced frequently (every 30 days on average) and their location can quickly become a nuisance in everyday use.
Conversely Opropre de LAVIE filters offer a basic solution: invisible and, above all, more efficient. Thanks to ultra-efficient coconut activated carbon and a returnable, recyclable cartridge, they provide complete filtration while reducing your ecological impact. Opropre contains around six times the amount of activated carbon of a tap filter.
In short: tap water filtration is practical. The Opropre filter is durable, comfortable and easy to use. designed for your health.
A water softener is designed to reduce water hardnessIn other words, its calcium and magnesium content, which is responsible for limescale deposits in pipes and household appliances. However, this classic salt-based system raises a number of problems.
By replacing essential minerals with sodium, this method depletes drinking water of its beneficial properties and can contribute to over-consumption of salt on a daily basis. What's more, the softener discharges salty waste water into the environment, polluting the water table and requiring heavy, costly maintenance.
LAVIE offers a much more respectful solution: ODOUCE. This salt-free ionic limescale remover transforms limescale into aragonite, a harmless powder that won't stick. This method preserves the right mineralsIt requires no electricity and no complex maintenance, and it protects your installations while protecting your body and the planet.
An innovative, durable and consistent filtration system for your well-being and your home.
Installing and maintaining your Opropre under-sink filter is as easy as 1-2-3. The starter kit contains everything you need Includes stainless steel filter holder, pre-filled cartridge, connection hoses and installation tool.
➊ Switch off the cold water supply.
➋ Unscrew the existing hose, then connect the filter inlet to the water supply, and the filter outlet to the tap using the flexible hoses.
➌ Once the fittings are in place, open the water supply and check for leaks.
➍ Leave the water running for 3 to 5 minutes to rinse the filter before using for the first time.
It's easy to maintain: replace the cartridge every 6 months. Once it's worn out, send it back to LAVIE and it will be refilled and put back into circulation.
Zero wastage and zero waste.
Among the under-sink water filters available on the market, the Opropre de LAVIE stands out from the crowd. Thanks to its ultra-efficient coconut activated carbon, it removes most pollutants and impurities while preserving the good minerals. And the benefits don't stop there: easy to install, durable and eco-responsible, Opropre Turquoise filters provide advanced filtration with no waste thanks to the returnable cartridge system.
In other words, it's a filter that combines efficiency, comfort, economy, ecology and takes care of you.
The most effective water filter is the one that eliminates most pollutants while retaining the right minerals. LAVIE's Opropre range, with its coconut activated carbon and returnable cartridges, meets these criteria perfectly.
Yes, the filter Opropre fits perfectly with all sinks standard. It simply connects to the cold water supply using the flexible hoses supplied. Installation is quick and easy, and requires no special skills. All you need is a space under the sink to fix it.
The lifespan of an under-sink water filter varies from model to model. At Opropre, each cartridge is designed to last 6 months. Once used, it is returned to LAVIE, recharged with new activated carbon and put back into circulation. An easy, effective and environmentally responsible solution.
Under-sink filtration has the advantage ofimproving the quality of tap water you drink every day. It eliminates unwanted pollutants while preserving the good minerals essential to your health. The result: water that's purer, healthier and better for your body. And no more bottled water!
Yes, most under-sink filters, like those in the Opropre range, are designed to effectively eliminate the taste and smell of chlorine. The result is water with a more neutral, pleasant taste, ideal for daily hydration or cooking without altering the flavour.
Article written on 27/06/2025 by Pascal Nuti - CIO Solable - Passionate about energy, I'm constantly on the lookout for new targets for improvement, exploring cross-disciplinary paths using novel methods.
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