Clearly Filtered: Get cleaner, safer water from ClearlyFiltered.com  Lack of water or poor water quality can cause many issues:  Dehydration can lead to wrinkles, fine lines, dry skin, and an itchy scalp.  Arsenic has been linked to skin lesions and skin cancer.  Excessive exposure to selenium has been associated with hair loss.   Hard water clogs pores, causes flaking, and can trigger eczema and psoriasis.  Chlorine irritates eyes and skin.   Chromium 6 can cause ulcers and burns.  Pesticides, herbicides, and fertilizer can lead to allergic reactions, blistering, and rashes.