Pipe spraying out water

It's a Shame! Are You Living with Green Stains?

Most stains found on the majority of plumbing fixtures are of the dingy or yellow-brown variety. Just as common are the darker and much more dramatic stains that rust leaves behind. 

But have you ever encountered blue or green staining on fixtures? If so, don’t fret quite yet! Stains do happen! But why? And what can you do about it?

Here are some helpful tips from all of us at Benicia Plumbing, where we’ve been serving our clients since 1975 and always looking to utilize the latest technology in today’s plumbing world. By providing complete plumbing services to businesses, industry, homebuilders and homeowners throughout the northern California Bay Area, we’ve been able to stay at the forefront of this industry and succeed at a high level for 45 years. 

Blue or green staining occurs almost exclusively with copper pipe and fittings (including brass, which is copper + zinc), and is caused by the corrosion and dissolution of the actual metal itself. Water quality and even improper electrical grounding can cause corrosion, adding excessive amounts of dissolved copper to the water coming out of the fixtures. When the copper-laden H2O is allowed to sit, it will stain. Unsurprisingly, the water may also have a strong metallic taste to it. Because this staining is the overall result of the pipe itself dissolving, it is far from harmless.

The extreme corrosion leading to copper staining has two main causes: Acidic water or stray electrical current running throughout the plumbing system. The latter is normally rare, but possible when an older home's plumbing is incorrectly used as a ground for your home’s electrical system - or when DC current from a mass transit power system finds its way there. Either of these cases can result in an electrochemical process known as electrolysis that accelerates metal corrosion. 

As acidic water flows through the copper supply pipes, small amounts of metal are eaten away and subsequently dissolved into the water. Since most people do not usually dry off every water-using fixture after they are done with it, the water sits and eventually stains the right surface and unfortunately, most fixture surfaces are vulnerable.

About Benicia Plumbing

At Benicia Plumbing, we follow our stringent Code of Conduct which states that we will always be friendly and professional, and that every customer will be greeted by the friendly voice of a knowledgeable, experienced and highly-skilled Benicia Plumbing professional. We also pledge to be punctual and courteous, where each client will be served promptly with a polite demeanor and respect. In addition, your Benicia Plumbing technician will always arrive at your location equipped and prepared to resolve your problem seamlessly and by devising the ideal solution for you and your budget.