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I’m replacing my gutters, and am considering copper over galvanized metal. Is copper considered toxic for rainwater harvesting?

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Hi Allen,

I’m not sure. It is “generally discourage” to use copper but in the few studies I’ve seen there hasn’t been much leaching.

Here is one project with copper:

https://www.arcsa.org/page/209

If you’re not drinking the water the quality is much less of a concern, generally speaking.

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