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Evaluation Of Corrosion Of Copper Drinking Water Pipes Exposed To Sulfurous Well Water And Ozone Treatment

Picture for Evaluation Of Corrosion Of Copper Drinking Water Pipes Exposed To Sulfurous Well Water And Ozone Treatment
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Product Number: 51321-16875-SG
Author: Kimberly Steiner
Publication Date: 2021
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Copper pipes used in a home plumbing system experienced repeated pinhole leaks. These leaks
occurred approximately nine years after the home was occupied, and eleven years after construction of
the home. The home is supplied by a private well with sulfurous water. To ameliorate the unpleasant
effects (taste and odor) of the sulfurous water, an ozone treatment system was installed seven years
after occupation of the home. During the intervening period following the treatment system installation,
multiple pinhole failures became evident. Upon examination of pipes removed during repair, a thick
layer of dark green and black corrosion products was observed on the interior, with areas of pitting
observed up to several centimeters in length. This paper will describe the composition and morphology
of the deposits formed inside the copper pipes, pitting corrosion observed and the potential effects of
the combination of sulfurous water and ozone treatment on the localized corrosion of the pipes.

Copper pipes used in a home plumbing system experienced repeated pinhole leaks. These leaks
occurred approximately nine years after the home was occupied, and eleven years after construction of
the home. The home is supplied by a private well with sulfurous water. To ameliorate the unpleasant
effects (taste and odor) of the sulfurous water, an ozone treatment system was installed seven years
after occupation of the home. During the intervening period following the treatment system installation,
multiple pinhole failures became evident. Upon examination of pipes removed during repair, a thick
layer of dark green and black corrosion products was observed on the interior, with areas of pitting
observed up to several centimeters in length. This paper will describe the composition and morphology
of the deposits formed inside the copper pipes, pitting corrosion observed and the potential effects of
the combination of sulfurous water and ozone treatment on the localized corrosion of the pipes.

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