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Corrosion in rainwater system

Discussion in 'Plumbing and Central Heating' started by cjcoffin, 12 Jan 2021.

  1. cjcoffin

    cjcoffin

    Joined:
    17 Oct 2006
    Messages:
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    Location:
    Cambridgeshire
    Country:
    United Kingdom
    We have a whole-house rainwater harvesting system (except for the drinking water taps), and in recent years I have had to replace the PRV on the hot water tank (corroded/broken spring) and a blanking plug (pinhole leak). There is a blue-ish deposit in the shower as well which I imagine is copper coming off the inside of the pipes.

    I have read that rainwater is acidic because of the dissolved CO2, is this what is eating the pipework? Is it a common problem and what should I do to prevent it?

    TIA
     
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  3. cjcoffin

    cjcoffin

    Joined:
    17 Oct 2006
    Messages:
    63
    Thanks Received:
    7
    Location:
    Cambridgeshire
    Country:
    United Kingdom
    Anyone at all?
     
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