What do the colored stains on my sink and bathtub indicate about my water?

Discoloration or unsightly stains are often the first signs of problem water. Red or red-brown stains are caused by iron and can be treated, depending on the type of iron, with a water filtration or softening system. Blue and blue-green stains are caused by copper, which typically gets in the water supply through corroded plumbing. While a filtration system can remove the copper, you should also consider consulting a plumbing expert. Home Page | FAQs | Glossary | Contact Us