Is bottled water safer than tap water during pregnancy?
Not automatically. Bottled water can contain microplastics, and tap water quality depends on your local system and pipes.
What's actually in it
Bottled water is often sold in PET plastic. FDA regulates bottled water as a food product, and some bottled water starts as municipal tap water.
Tap water is different. Public water systems publish a local Consumer Confidence Report. That report tells you what was found in your water, including regulated contaminants.
What the research says
A 2025 Environmental Monitoring and Assessment study found microplastics in tested bottled drinking water samples.
A 2025 NPJ Clean Water study found 10 drinking water treatment facilities removed more than 97.5% of microplastics from source water, mainly through filtration steps.
FDA says bottled water has quality rules for contaminants. EPA says your local Consumer Confidence Report is the place to check public tap water quality.
During pregnancy, bottled water is not automatically the safer pick. Check your local report for lead, nitrate, PFAS, and disinfection byproducts. If you have old plumbing or a private well, test your water. Use a filter matched to the problem, then drink from glass at home when you can.