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What causes tannins in well water?

Updated: 9/15/2023
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14y ago

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Tannins are caused by vegetation decaying and leaching into the water supply. To know if you have tannins or if it is insoluble iron run the well for a little while and fill up a white cup, if the yellowish color never disappears then you probably have tannins in your water. You are more likely to have tannins if you are located near a body of water or in a forest area. Hope this helps.

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14y ago
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Q: What causes tannins in well water?
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