What is the actual cost of limescale for your household every year?

Limescale is not always visible, but it puts a strain on household budgets.
Between energy overconsumption, wasting cleaning products, premature wear and tear on household appliances, and the repeated purchase of cleaning products, the bill can quickly add up.

Depending on the water hardness in your municipality, the "invisible bill" for limescale varies from double to single:

• In an area with average / soft water (15–25 °f): the additional costs amount to approximately €250 to €500 per year.
• In an area with very hard water (> 30–35 °f): losses can easily amount to €600 to €1,100 per year for a family.

We examine what limescale actually costs you daily, depending on your situation.

Energy overconsumption: up to €300/year gone

When water containing lime is heated, calcium and magnesium deposit on the heating elements and heat exchangers. This limescale acts as an insulator: the appliance must run longer and consume more electricity or gas to reach the same temperature.

• 1 mm of limescale on a heating element leads to approximately 7% overconsumption of energy.
• 6 mm of limescale can reduce the energy efficiency of a water heater or boiler by 30% to 40%.

Financial impact:

• Slightly / moderately hard water: €50 to €100 of energy wasted per year.
• Very hard water: €150 to €300 of energy wasted per year.
  
  

Detergents & hygiene products: from simple to double

In hard water, soap molecules react with calcium instead of dissolving properly. The result: the product lathers less and cleans less effectively, leading to systematic overdosing.

• Laundry detergent & dishwashing liquid: You need to use 20% to 50% more product to get the same result as with soft water.
• Personal hygiene: Shower gel, shampoo, and soap experience the same phenomenon, which leads to dry skin and stiff hair.

Financial impact:

• Water low / moderately hard: €80 to €150 in overconsumption per year.
• Very hard water: €180 to €350 in overconsumption per year.

Household appliances: a shortened lifespan

Limescale is one of the main causes of malfunctions in household appliances. By overheating the heating elements and clogging the pipes, it accelerates the wear and tear of your equipment.

• Boilers and heating systems: Limescale buildup on heating elements, frequent malfunctions and premature replacement.
• Washing machines and dishwashers: Clogged spray arms, blocked pumps, and burnt-out heating elements (lifespan often reduced from 7–8 years to 4–5 years in very hard water areas).

Financial impact (depreciated over the useful life):

• Water low / moderately hard: €80 to €150 per year.
• Very hard water: €150 to €300 per year.

Cleaning & limescale products: the invisible bill

White marks on shower walls, taps or glasses require ongoing maintenance.

• Regular purchase of limescale sprays, household vinegar, descalers and specific tablets.
• Additional time spent on cleaning and descaling equipment.

Financial impact:

• Slightly / moderately hard water: €40 to €80 per year.
• Very hard water: €80 to €150 per year.
  
  

Overview: how much does water cost depending on the hardness?

Regain control over your water with Mizuro

Regardless of the water hardness in your municipality, eliminating or reducing limescale can yield tangible savings while improving your daily comfort: softer laundry, preserved appliances, and lower bills.