How do I remove a blue water stain from my bath. I have some vinyl picket fence panels that I would like to remove the smaller caps from The green and greenish-blue stains you see in the bathtub are the result: dissolved copper and brass in your water caused the stains. To remove stains caused by acidic water, use an acidic cleaner. Pour some plain white vinegar on a sponge or cloth, apply it to the stain, then scrub. Vinegar is 5 percent acetic acid. Three years ago a stain appeared in my shower. It’s a blue-green stain coming from the shower handle to the drain, a streak. The bluegreen color is not lime (that is white); it is likely copper, but the copper may have stained the lime deposit. How to Remove Copper Stains from Baths and Showers. If your local water has a high copper content, it can leave blue-green stains on the shower and/or bath Have you ever had blue or green staining on fixtures? It happens! But why? And what can you do about it? Left untreated, the greenish-blue stains may become crusted and damage the porcelain finish on a bathtub. It is best to remove these stains as soon as they I’ve been scrubbing this blue stain in a bathtub but it’s not going away. Anyone know what caused it and how to remove it without damaging Blue-green stains, like the one shown up to are normally the signs of minerals the How To Clean an Old Porcelain Enamel Bathtub or Sink. Lynda said, “I was told to use toilet bowl cleaner in my tub for the hard water stains. Now I have a blue-stained tub and still have hard water stains. Help! hello any ideas on the best way to remove blue marks on bath. i am not sure whether this is from the taps? it is a newish bath which has not been us. a series of hazy blue stains on just about every porcelain and tile surface. Rust Stains: I’ve found rust to be the easiest stain to remove so far, as it To remove general hard water stains from your tub or sink, spray them If your sink or shower has blue stains, you may have low pH water. Blue stains in shower, tub or sink fixtures, are in the vast majority of cases, a result of household They require a very clean & balanced water supply.