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Current IssueApril 18, 2014
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Ask The Expert: Blue-green water
06/01/2004 
 
Question:

Q I have been building homes in Arkansas for the past 20 years and I have never run into this “blue-green” water that is in one of the homes we have just finished. Can you please give me or direct me to any info on this problem?

David Turner Mountain Home, Ark.

 

Answer: 

A We do have an “On Tap” column by Dr. Kelly Reynolds that ran in WC&P’s March 2004 issue (see: “Cyanobacteria—Natural Organisms with Toxic Effects”: wcponline.com/NewsView.cfm?pkArticleID=2633) and which discusses cyanobacteria, or blue-green algae. More likely, though, what you’re dealing with is actually galvanic corrosion of copper pipes. On our website—www.wcponline.com, you’ll see mention of at least three related articles. One discusses blue-green staining being a problem of improper grounding and resulting corrosion of copper pipes in the home (see: “Getting Grounded: How to Stop Blue-Green Staining,” WC&P, July 2001 and “Blue Stains: Copper Pipe Leaching & Proper Electrical Grounding,” WC&P, March 2001—both by Pete Ostwald). The other offers a more detailed look at the causes of blue-green water (see: “Solving Blue-Green Water,” Larry Henke, WC&P, January 2000). These aren’t actually available online, though, so you’ll have to request we fax them to you. You can submit your contact information online for that.

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