The hardness of water refers to the concentration of minerals, primarily calcium and magnesium, present in the water. It is typically measured in terms of milligrams per liter (mg/L) or parts per million (ppm) of calcium carbonate (CaCO3) equivalents.
The ideal hardness level for a dishwasher can vary depending on the manufacturer's recommendations and the specific model of the dishwasher. However, in general, water hardness levels up to 120 mg/L (or ppm) are considered relatively soft and should not pose significant problems for most dishwashers.
Water hardness levels between 120 mg/L and 180 mg/L (or ppm) are classified as moderately hard and may require some additional precautions or adjustments. This could include using more detergent or a dishwasher salt designed to soften the water and prevent the formation of limescale deposits on the dishes and inside the dishwasher.
Water hardness levels above 180 mg/L (or ppm) are considered hard or very hard. In these cases, using a water softener or a dishwasher salt specifically designed for hard water is recommended to prevent limescale buildup and ensure optimal performance of the dishwasher.
To determine the exact hardness level of the water in your area, you can contact your local water supplier or use a water testing kit, which is readily available in many stores or online. Additionally, some dishwashers have built-in water hardness sensors that can automatically adjust the settings based on the water hardness level.
Following the manufacturer's recommendations and using appropriate detergents or additives for your specific water hardness level can help optimize the performance and efficiency of your dishwasher while ensuring clean and spotless dishes.