What Causes Blue Stains In Tub?
Blue stains in a tub can be caused by a variety of factors, including the use of certain cleaning products, hard water with a high mineral content, or the presence of copper or brass fixtures in the plumbing system. Copper ions can dissolve in the water and create blue stains when they come into contact with the tub’s surface. To prevent blue stains, it may be necessary to switch to non-abrasive cleaning products or install a water softening system. If the staining persists, it may be necessary to replace any copper plumbing fixtures.