Are bottled mineral waters in plastic carrying both bisphenols and phthalates?
Yes. New testing finds both BPA-style and phthalate chemicals in popular bottled mineral water.
What's actually in it
Bottled mineral water uses three plastic parts: the bottle (usually PET), the cap (usually HDPE), and the seal liner. PET can leach bisphenols like BPA and BPF, and the soft seal can leach phthalates. Heat, light, and time all speed up the leaching.
Even "BPA-free" bottles often use BPF or BPS, which behave like BPA in the body.
What the research says
A 2026 study in Environ Toxicol tested popular brands of bottled mineral water sold in Brazil. Both bisphenols and phthalates showed up at the same time in many of the samples, and the lab confirmed the water had real estrogen-like activity in cell tests.
The risk score was highest for kids and pregnant women, who drink more water per pound and have more sensitive hormone systems. Sun-exposed and warm-stored bottles had the worst readings.
For daily use, fill a stainless steel or glass bottle from a filter at home. If you must buy bottled, pick glass and store the bottles cool and dark.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Bisphenols and Phthalates in Bottled Mineral Water: First Evidence of Co-Occurrence, Estrogenic Activity, and Health Risk in Brazil. | Environ Toxicol | 2026 |
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