Question: what are the harmful effects of hard water?
Answer: Scale Buildup on Plumbing Fixtures and Appliances. If you notice this, you very likely have hard water. ... 
Dry Skin and Hair. ... 
Faded Clothes. ... 
Stained Sinks and Bathtubs. ... 
Frequent Plumbing Repairs. ... 
A Rise in Water Bills. ... 
Unsightly Dishware.