Can kids use a copper water bottle? School-age children can usually drink plain water from a clean, pure copper water bottle, as long as you follow the same safe-use rules as adults and keep in mind that children's copper limits are much lower. Copper-stored water is not for babies, should never be used to make infant formula, and you should ask your pediatrician first if your child has a liver condition or a family history of Wilson disease.
Parents often ask us this when the whole family starts the copper water habit. Below is what is known about children and copper, how much copper kids need, and a practical way to use a copper water bottle at home and for school.
Is a copper water bottle for kids safe?
Copper is an essential mineral. Children need it to grow, and most of it comes from food such as nuts, seeds, whole grains, beans and potatoes. Water stored in a copper vessel picks up small amounts of copper. How much depends on the water itself (soft or acidic water dissolves more copper), how long it sits and how warm it gets.
That is why the rules matter more for children than for adults. A child's body is smaller, so the same amount of copper is a larger share of what they can safely take in. Used the normal way, with plain water stored for a night and a clean bottle, copper-stored water is one small source of copper among many. Used the wrong way, with juice, milk, hot drinks or water left for days, it can add far more copper than intended.
For the full background on adults, read is it safe to drink from copper?
How much copper do children need?
The US National Institutes of Health (NIH Office of Dietary Supplements) sets these daily amounts. The upper limit is the most a person should take in each day from all sources combined: food, water and supplements.
| Age | Recommended daily copper | Upper limit per day |
|---|---|---|
| 0–12 months | 200–220 mcg (adequate intake) | Not set; copper should come from breast milk, formula or food only |
| 1–3 years | 340 mcg | 1,000 mcg (1 mg) |
| 4–8 years | 440 mcg | 3,000 mcg (3 mg) |
| 9–13 years | 700 mcg | 5,000 mcg (5 mg) |
| 14–18 years | 890 mcg | 8,000 mcg (8 mg) |
| Adults | 900 mcg (0.9 mg) | 10,000 mcg (10 mg) |
A toddler's upper limit is one tenth of an adult's. For drinking water in general, the World Health Organization's guideline value for copper is 2 mg per litre. These two numbers explain why young children are the group where extra care makes the most sense.
Who should not drink copper-stored water
- Babies under 12 months. Do not give them copper-stored water, and never use it to prepare infant formula. In the 1980s a liver disease in Indian infants, known as Indian childhood cirrhosis, was linked to milk boiled and stored in copper and brass pots. It largely disappeared after families stopped using those vessels for milk.
- Children with Wilson disease or a family history of it. Wilson disease is an inherited condition in which the body cannot get rid of copper properly. Anyone with it, or at risk of it, should check with their doctor before using copper vessels at all.
- Children with a liver condition or who are under medical care for any reason. Ask your pediatrician first.
If a child has nausea, vomiting or stomach pain after drinking from a copper vessel, stop using it and speak to a doctor.
Safe-use rules for kids (and everyone else)
- Plain water only. This is the rule kids break most often. No juice, lemonade, sports drinks, milk, chocolate milk, tea or smoothies. Acidic and milky drinks react with copper and pick up much more of it.
- Room temperature or cool water. Never hot water or warm drinks.
- Fill at night, drink in the morning. About 6 to 8 hours is the traditional storage time. Do not leave water in the bottle for more than about 15 hours, and never for several days.
- Do not leave it in the sun or a hot car. Copper is not insulated, and warm water sitting in copper is not what you want. Our guide on whether copper keeps drinks cold explains why.
- Clean it every 1 to 2 weeks with lemon and salt, or vinegar and salt, then rinse and dry fully with the cap off. Step by step: how to clean a copper water bottle.
- Make it part of their water, not all of it. Because children's limits are lower, a sensible approach is one glass of copper-stored water in the morning, then plain water from any bottle for the rest of the day. Ask your pediatrician if you are unsure how much is right for your child.
For how much adults should drink, see how much copper water to drink per day.
Practical tips: copper bottles at home and at school
Size and weight
Our bottle holds 950 ml (33 oz). Full, that is almost a kilogram of water before you add the bottle, which is heavy for a young child's backpack. For younger kids, many families keep the copper bottle at home and pour a morning glass, then send a lighter everyday bottle to school. A small copper cup is also a good size for little hands: the cups in our copper pitcher set hold 12 oz (0.35 L). Read more in our guide to the copper cup for drinking water.
Drops and dents
Copper is a soft metal, and children drop bottles. Our bottle is made from 21-gauge copper, hand-hammered at least 1,200 times, and the threaded copper cap has raised ribs that stiffen the metal so it resists everyday knocks. A dent is a cosmetic mark; it does not affect the water.
Leaks and cleaning
The cap is a leak-proof threaded copper cap with a food-safe silicone ring, so no plastic touches the water. Remind older kids to hand wash it (no dishwasher), and to tell you if they put anything other than water in it so you can rinse and clean it straight away.
The dark inside is normal
The inside is bare, unlined copper, so it darkens with use. Kids sometimes think it is dirty. That tarnish is how genuine copper behaves and a sign the bottle is not plated or lined. Green spots mean it stayed wet too long; clean it and let it dry fully.
What makes a copper bottle suitable for a family
If children will drink from it, the quality of the copper matters even more:
- Known purity. Kaarigar bottles are made from lab-tested 99%+ pure copper; our latest mill test certificate shows 99.51% copper and 0.002% lead.
- Lead and cadmium tested. An accredited government lab ran an FDA lead and cadmium leaching test (ASTM C738-20) on our copper jug, bottle, mug and glass. Lead and cadmium were below the detection limit of 0.03 ppm, against FDA limits of 2.0 and 0.5 ppm.
- No seams or solder. Each bottle starts as a single circle of copper, so there are no joints or soldered seams. Every bottle is checked at least twice for defects and leaks.
- Bare copper inside, food-safe lacquer outside. The lacquer protects the outer shine; the water only touches copper.
We make every bottle in our own workshop in India and have been making copperware since 2013. Browse our copper water bottles, and if you are new to the habit, start with our simple copper water morning routine.
FAQ
At what age can a child drink from a copper water bottle?
There is no official age, but copper-stored water should not be given to babies under 12 months or used for formula. For toddlers and young children, whose copper upper limits are lowest, ask your pediatrician first. School-age children can usually have a morning glass of plain water stored overnight, following the safe-use rules above.
Can my child take a copper water bottle to school?
Yes, if they only fill it with plain water and the water does not sit in a hot bag or car all day. Because a 950 ml copper bottle is heavy when full, many parents use it at home and send a lighter bottle to school.
Can kids put juice or milk in a copper bottle?
No. Juice, milk, lemonade, sports drinks and other acidic or milky drinks should never go in copper. Plain water only.
How much copper water can a child drink a day?
No official amount exists for copper-stored water. Children's total copper upper limit ranges from 1 mg a day at ages 1–3 to 8 mg at ages 14–18, from all sources. Keeping copper water to a morning glass and using plain water the rest of the day is a cautious approach; your pediatrician can advise for your child.
Is copper water good for children?
Copper is an essential mineral, and children get what they need mainly from food. Copper-stored water is a traditional practice, not a treatment, and it has not been shown to improve children's health. Research does show that storing water in copper reduces some bacteria in the water. For more, read our guide to copper water bottle benefits.
This article is general information and is not a substitute for professional medical advice. Speak to your child's doctor about anything specific to your child's health.