Hardness in drinking water is considered desirable at levels of what range?

Hardness in drinking water is primarily attributed to the presence of calcium and magnesium ions. The range of 50 to 80 mg/l is often considered ideal because it strikes a balance between taste and potential health benefits. Water within this range is generally accepted as safe and palatable for consumption.

Hardness levels below this range may indicate very soft water, which could lead to challenges in drinking water quality, such as being too corrosive and potentially leaching metals from plumbing systems. On the other hand, water hardness levels above 80 mg/l can still be acceptable but may begin to affect taste and potentially cause scale buildup in plumbing and appliances.

Thus, the range of 50 to 80 mg/l is associated with pleasing flavor profiles while minimizing risks, making it the desirable standard for drinking water hardness.