What is the green / blue staining on bathroom fixtures, clothes and hair?
The source of the green or blue stains is copper which is leached from copper piping by naturally acidic water. The problem is most noticeable in the hot water recirculation loops in high-rise buildings. Use a detergent (such as Tide) for laundry as anything made of pure soap (such as Ivory Snow) will make the staining worse as the soap precipitates the copper out of the water. As part of any Drinking Water Treatment Program, the implementation of a pH and alkalinity adjustment (corrosion control) will substantially reduce this problem.
