Introduction:   As we know, plastic water bottles are being used globally, but the use of these bottles may cause severe health hazards to the human body and environment. We will understand here how these bottles may pose a threat to our bodies. why they are still being used. What are the alternatives for these bottles, and what precautions should we take while using them to get sustainable alternative solutions? Possible health hazards due to the use of plastic water bottles:  1. One liter of water in a single-use plastic bottle may contain a few lac nanoparticles (less than 1 micrometer in size) of plastic. When we drink this water, these nanoparticles are consumed by us. These tiny particles can penetrate the human body.  2. These tiny particles may pose potential risks to many parts of the body, including the brain and heart. It may be the reason for developing cancer as well. Moreover, Nano plastic particles may be transferred through the placenta to unborn babies.