Crystal jugs are preferred more than plastic jugs for a lot of reasons. Some of those are mentioned in the following points:
Preserves minerals - It has already been an established fact that plastic is not good for the environment. Therefore, it cannot be beneficial for your health as well. Water stored in plastic bottles loses its minerals. But the water kept in crystal glass jugs remains in good condition for a longer period of time. The minerals are preserved and also the water remains fresh which is good both for your health and environment.
No contaminations - Plastic bottles, when kept in heat and humidity for a long time, release toxins into the water. This alters the taste of the water and also is harmful to your body. Crystal glass jugs are free from this problem as they do not react to the heat outside. These jugs do not give off a foul taste or smell and preserve the water rightly. You will never find any residues settling at the bottom of crystal glass jugs.
Storing and drinking water out of crystal glass jugs are practiced by many people. The jugs can definitely be more expensive than plastic bottles but come with a lot of other benefits as well. Not being harmful to the health or environment definitely makes these jugs a popular choice.