PLA may be safe for simple things like water or a one-time-use food dish, but repetitive use may lead to health issues and would not be an ideal option for kitchenware.

Is PLA toxic in water?

PLA is a bioplastic. It is non-toxic, making it an appropriate choice for use in your aquarium, but there are some important factors to consider when using PLA filaments in aquariums to minimize harm to your fish or other aquatic pets.

Is PLA safe for a water bottle?

Another concern is that PLA 3D printed materials have tiny holes and cracks that can accommodate harmful germs and bacteria. JMU concludes that PLA may only be safe when used one time or for simple things like water. However, repetitive use may cause health concerns.