Hard water (TH): measure hardness and take action against limescale
Limescale is one of the main reasons for installing filtration or water treatment equipment in the home: white marks, scaling on heating elements, difficult foaming, marked taps and appliances that age faster. Before choosing a solution, you need to start with the basics: measuring your water's hardness (TH) and identifying your real needs.
TH, hardness, limescale: what exactly are we talking about?
TH, or Titre Hydrotimétrique, is an indicator of water hardness. It mainly reflects the presence of calcium and magnesium salts. The higher the TH, the greater the tendency of water to form scale on kettles, water heaters, showers and household appliances.
Calcareous water is not necessarily dirty water. Above all, it's a question of user comfort and system protection.
The misconception: limescale = calcium = health benefits
Many people equate limescale with calcium, which is good for the body. In reality, the limescale visible in a kettle or water heater is mainly a deposit, often calcium carbonate, which forms when hard water is heated or evaporated.
This does not mean that hard water is an ideal or sufficient source of calcium for the diet. Calcium intake depends primarily on the diet, while the scaling of appliances is a physical-chemical phenomenon linked to the domestic network.
Reducing limescale is therefore first and foremost a matter of protecting the installation, improving user comfort and limiting deposits. It does not mean removing an essential nutrient in the nutritional sense of the term.
How to measure the hardness of your water?
Test strip
- Very simple to use.
- Quickly determines whether your water is soft, medium or hard.
- Less precise than a drop test.
Drop test
- More reliable TH measurement.
- Recommended if you want to size a solution or compare before and after treatment.
Results from your water distributor
Most distributors publish hardness data or network analyses. This is often the best way to find out the average values for your area, with possible variations according to zone or season.
When does limescale become a real issue?
Without going into too much technical detail, here's what to bear in mind:
- Low TH: scaling remains limited and the need is more for taste or odor.
- Medium to high TH: scaling becomes noticeable, and an anti-scaling solution or a global approach may become relevant.
- High TH: deposits and equipment wear become a real issue. In this case, we need to think in terms of system protection and user comfort.
What can be done about limescale?
You want to limit limescale build-up in your home
The anti-scale RING is designed to protect against the effects of limescale on the system. It's an anti-scale solution, not a filtration system designed to retain particles or treat chlorine.
Find out more about RING anticalcaire
You want a total solution for your home
The CSC station is suitable if you're looking for a broader solution: anti-scale action, sediment filtration and improved water comfort thanks to a stage dedicated to chlorine, taste and odours. It protects the system while improving the quality of use.
In the case of highly particle-laden water, self-cleaning pre-filtration upstream, or a version incorporating this function, enhances protection and stabilizes performance over time.
Above all, you want high-quality drinking water
In this case, you need to consider the point of use with an osmosis system. Limescale mainly concerns sanitary use and equipment protection. For drinking water, the approach is different: an osmosis unit treats the water where it is consumed, with a logic distinct from that of household anti-scaling.
Osmodyn reverse osmosis systems include built-in protection against limescale.
Discover our Osmodyn reverse osmosis systems
The Osmodyn approach: treating the right problem in the right place
At Osmodyn, we avoid the classic mistake of trying to solve everything with a single device. The right choice depends first and foremost on your priority:
- protecting the system against scaling,
- improve the overall quality of the water in your home,
- or aiming for more demanding drinking water at the point of use.
It's this consistency between actual use, durability, ease of maintenance and avoidance of unnecessary obsolescence that makes the difference.
To sum up
- First measure your TH.
- Then choose the solution that best suits your needs:
- RING if your priority is scaling,
- CSC if you want an overall improvement in domestic water quality,
- osmosis if your priority is drinking water.