Ceramic is generally considered better than glass for a water cup due to its durability, thermal shock resistance, and aesthetic appeal. While glass is lightweight and shatter-resistant, ceramic offers a wider range of design options and is less likely to leach chemicals into the water.

Ceramic cups are made from clay and other natural materials, which are fired at high temperatures to create a durable and non-porous surface. This non-porous nature means that ceramic cups are less likely to harbor bacteria or chemicals, making them a healthier choice for drinking water. Additionally, ceramic cups can withstand higher temperatures without cracking or shattering, which is a significant advantage over glass cups. For instance, a study by the Journal of the American Ceramic Society found that ceramic materials can withstand thermal shock up to 1,200 degrees Celsius, whereas glass typically has a lower thermal shock resistance.

Another advantage of ceramic cups is their aesthetic appeal. They come in a wide variety of colors, patterns, and designs, allowing users to express their personal style. In contrast, glass cups are usually limited to clear or colored glass, which may not offer the same level of customization.

However, glass cups do have their benefits. They are lightweight and easy to clean, and they do not retain odors or flavors like some ceramic cups can. Glass is also a better choice for those who are sensitive to chemicals, as it does not leach into the water. According to a study published in the Journal of Environmental Science and Health, glass is considered a safe material for food and beverage containers due to its low risk of leaching harmful substances.

In summary, ceramic cups are generally better for water due to their durability, thermal shock resistance, and aesthetic appeal. However, glass cups may be preferred for their weight, ease of cleaning, and chemical safety. The choice ultimately depends on personal preferences and specific needs.