# Recommended Minimum Domestic Water Pressure

> Discover the recommended water pressure levels for the proper operation of sanitary installations and ensure optimal comfort in your home.

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Minimum and Recommended Water Pressure

Minimum and Recommended Water Pressure

Minimum Pressure:  
1.5 bar is the minimum threshold below which a tap will no longer function properly.  
Below this level, water flow becomes weak and certain appliances (dishwashers, washing machines) may not operate correctly.

Comfortable Pressure:  
A pressure between 2.5 and 4 bar is considered optimal for residential buildings.  
It ensures normal water flow at taps and reliable operation of sanitary equipment.

Maximum Pressure:  
Pressure supplied from pumping stations can reach 6.5 bar, but it should be reduced within the building to prevent damage.

Practical Considerations for Buildings

In apartment buildings, water pressure decreases by approximately 1 bar for every 10 metres of height.  
A booster system may therefore be required on upper floors.

Summary:

Minimum operating pressure → ≥ 1.5 bar

Comfortable operating pressure → 2.5–4 bar

Excessive pressure (risk of damage) → > 5–6 bar

1,5 bar constitue le seuil en dessous duquel un robinet ne fonctionne plus correctement

## Languages

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