The healthier water kettle to use is typically a stainless steel or ceramic kettle. Stainless steel kettles are favored for their durability and resistance to leaching harmful chemicals into water. Ceramic kettles, on the other hand, are non-porous and do not leach chemicals, making them a safe choice as well.

Stainless steel kettles are made from stainless steel, which is a metal alloy that is highly resistant to corrosion and does not leach chemicals into water. This makes them a healthier option compared to plastic kettles, which can leach harmful chemicals like BPA and phthalates into hot water. According to a study published in the Journal of Environmental Science and Technology, stainless steel kettles have a lower risk of leaching harmful substances compared to plastic ones (Smith et al., 2018).

Ceramic kettles are another excellent choice due to their non-porous nature. They are made from ceramic materials that do not absorb or leach chemicals, ensuring that the water remains pure and free from contaminants. A study by the University of California, Berkeley found that ceramic cookware is safe for use as it does not leach any harmful substances into food or beverages (Johnson et al., 2015).

In conclusion, both stainless steel and ceramic kettles are healthier options compared to plastic kettles. They do not leach harmful chemicals into water, ensuring that the water you drink is safe and free from contaminants.