Yes it is. Municipal purveyors of water are only required to deliver water that is 16 grains (the typical unit of measure for hardness) per gallon hard. This is extremely hard water, and while most utility companies do better that this, water that is 1 grain per gallon hard is still hard water. If it is 6 or 7 grains hard, which is more typical, it has all of the detrimental effects of hard water, such as spots on dishes, soap accumulation in clothing, build up in plumbing and water using devices, deterioration of plumbing fixtures, and dry skin, to mention a few. Also, it may be advisable at this point, to install a filter designed to remove disinfectant by-products such as chlorine, and ammonia. It would be beneficial to consult your water treatment professional for advice.