Water hardness in France

Map automatically powered by Hub'Eau (Ministry/ARS, 2025).

The results displayed correspond to the latest official samples available for your municipality.

For even more accurate monitoring, we recommend performing a home drip test (kits available in-store or online).

Water hardness and the maintenance of washable diapers

Water hardness, expressed in French degrees (°f), corresponds to the limestone content of your tap water. It varies from one region to another and can have a significant impact on the washing efficiency of cloth diapers.

Hard to very hard water, rich in limescale, can reduce the effectiveness of detergents and leave residue on fabrics. This can lead to reduced absorbency, unpleasant odors, or premature clogging of diapers.

Conversely, very soft water can generate excess foam if the detergent is overdosed, which complicates rinsing and can leave traces of detergent on textiles.

It is therefore essential to adjust the detergent dosage according to the hardness of your water, following the recommendations indicated on the product packaging. This ensures effective washing, extends the life of the diapers and limits the risk of irritation to your baby's skin.

Any doubts? Need support?

At Ma Boule de Couches , we understand that every household has its own unique characteristics. That's why we'll help you set up a personalized laundry routine that's tailored to your water, detergent, and equipment.