Hard water causes the hair to stand up and makes it harder to wash and it can make the hair tangled and rough. When the hair is tangled, the shampoo and conditioner is often not washed out effectively enough and so that can cause quite a few problems! If you wash in softer water you are no doubt going to have better results as the water does not leave any residue in the hair. There are some special shampoos and conditioners for use in hard water areas which are designed to help protect the hair from drying our too much. These products are generally more expensive but they do work. You can also take expert advice from forhair.com site of Dr. Cole