"Ian Middleton" wrote in message
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Can water softener waste (probably containing calcium/magnesioum chloride
and may be some salt) be passed through copper pipe OK ?

Would it attack the copper ? I very much doubt it but worth asking.


Almost everything attacks copper pipe until it forms a protective shield of
the various oxides and other Cu salts inside. Providing nothing is done
to remove these at intervals the pipe should be okay.

But why not just use plastic ?