A HARP Home is a Happy Home

What are the Green/Blue Stains in My Bathroom?

What are the Green/Blue Stains in My Bathroom?

When you're brushing your teeth or taking a shower, have you noticed any blue or green stains sitting around your drains? While no bathroom stain is desirable, when they are this color, they are a little more concerning than your average white calcium stains. However, there are a number of things that could cause blue or green stains in your bathroom, all of which you should handle sooner rather than later.

Corrosive Water

If your water is very hard, or has a pH that is far from what it should be, it can begin to corrode your pipes and other metal plumbing fixtures — which usually results in unsightly stains. Other signs that this may be the cause of the stains include, but are not limited to: if you notice your water has a metallic taste to it or your plumbing has had a lot of leaks.

Typically, you can clean these stains by applying a mixture of baking soda and vinegar on them, followed by letting that mixture it sit for 20 minutes or so.

Our expert technicians are here for you. Schedule a service today!


You may not realize it, but mold can appear in a number of different colors — one of them being a shade of blue. Most mold-related stains may appear on your plumbing if there is too much moisture in your bathroom (typically due to a leak or poor ventilation). Additionally, these stains will most likely have dark spots in them and might have a fuzzy look to them.

That being said, the best way to get rid of these stains is to use a mold disinfectant, followed by keeping an eye on any leaks in your bathroom; this will help prevent any future problems down the road.

If you find yourself with home plumbing issues, contact the experts at HARP Home Services for help!