A clean, shallow water dish is one of the most basic but essential accessories in any leopard gecko enclosure. Despite being a desert species, leopard geckos need access to fresh water at all times. The dish should be heavy enough to resist tipping and shallow enough that there is no risk of drowning — a depth of half an inch to one inch is appropriate for adults, even shallower for juveniles.
Ceramic and stone dishes are the best options because their weight provides stability and their surfaces are easy to sanitize. Avoid plastic dishes that scratch easily, as bacteria colonize scratched surfaces far more readily than smooth ones. Some keepers use small ceramic ramekins or saucers from kitchen supply stores, which are often cheaper and more durable than products marketed specifically for reptiles.
Water should be changed daily, and the dish should be scrubbed with a reptile-safe disinfectant weekly. Leopard geckos occasionally defecate in their water bowls, and standing water in a warm environment becomes a bacterial breeding ground quickly. Using filtered or dechlorinated water is a good practice, though most municipal tap water that is safe for human consumption is also acceptable for reptiles.
Drip systems and small reptile fountains are available but generally unnecessary for leopard geckos. These products are designed more for tropical species that rely on moving water as a drinking cue. Some leopard geckos are drawn to the movement and may drink more readily from a dripper, but the added complexity and cleaning requirements make them a niche accessory rather than an essential.