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Copper Corrosion – Staining/Metallic Taste


Blue stains can be seen in wash basins, baths and showers.  The water out of the tap is cloudy and sometimes a slight blue colour.  The water sometimes has a metallic taste.

Water Supply

Rainwater is from a plastic lined concrete tank (the original tank had a leak).


The water tested for pH, hardness and for the presence of copper.


The source water was tested and found to be conducive to copper corrosion.  A copper test of the water confirmed a higher than normal level of copper.  Corrosion of copper pipes is not uncommon.  The water was buffered to reduce the aggressiveness of the water and corrosion of the copper pipes.

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