We have a house with unacceptable levels of copper in the domestic water. This was first apparent when a new filter cartridge became clogged . The local water company tested at the source (outside the house) and found normal copper content but found high levels of copper in both hot and cold water lines. Residue from the surface of the filter tested as copper. The house was build in 1985 with two hot water recirculating loops on two hot water tanks. There were no check valves between the hot water lines and the cold. These pumps ran 24 hrs and day. It has been suggested that they caused erosion of the copper pipe. Our questions: How do we confirm what the cause is and how do we get rid of the copper in the system?
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