You must have seen your grandparents or parents drinking water from a copper vessel for its numerous health benefits. It aids in the development of collagen, and it's great for our bones, tissues and also keeps our body cool. But it's not as healthy as we think.
The National Institutes of Health of Dietary Supplements states that regular water consumption from a copper vessel may cause kidney and liver damage because copper starts circulating in the blood. Also, storing water daily in a copper vessel may lead to rusting which can cause health issues.
Therefore, it's recommended to keep water in a copper vessel for 6-8 hours and drink it. Also you should not consume water from copper vessel more than twice or thrice a day.
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