Testing of beverage bottle cap liners reveals widespread use of toxic phthalates and PVC

In collaboration with our partners at Defend Our Health, the Healthy Stuff Lab has discovered that the gaskets lining caps or lids of glass-bottled beverages are frequently made of vinyl containing high levels of phthalates. "Vinyl" is short for polyvinyl chloride or PVC and "phthalates" is short for ortho-phthalate esters, a class of hazardous plasticizers added to vinyl plastic. Phthalates are not bound to the plastic, and we know from prior research that the chemicals migrate into food or liquid. 

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The good news is that several beverage companies have already taken quick action after we communicated our findings to them, and we continue to engage with companies. 

Phthalates have been phased out of many food-contact materials due to concerns about their links with health impacts including abnormal genital development and asthma. To determine their frequency in bottled beverages (non-alcoholic), we collected 273 caps from glass-bottled beverages and 10 caps from plastic-bottled beverages around the United States and Canada and tested the gaskets. 

Individual sample listings are below.** Results for gaskets from the 273 glass-bottled beverages are also aggregated as an Excel spreadsheet downloadable here.

**Due to our engagement, some companies have switched to different materials for their cap gaskets since their products were tested. Test results provide a snapshot of cap gaskets purchased in late 2019 and throughout 2020. 

Published on July 13, 2021

Sample Listing

Santa Cruz Organic Pure Lemon Juice
ESBO plasticizer, PVC
Sidral Mundet Apple Soda
Polystyrene copolymer
Sidral Mundet Green Apple Soda
Polystyrene copolymer
Signature Select French Style Sparkling Lemonade Flavored
Phthalate plasticizer, PVC
Signature Select Italian Mineral Water Sparkling
PEVA
Simple Truth Organic Italian Soda Sicilian Lemon 25.4 fl oz
Phthalate plasticizer, PVC
Simple Truth Organic Italian Soda Tangerine 25.4 fl oz
Phthalate plasticizer, PVC
Simple Truth Organic Kombucha Strawberry Lemonade
PEVA
SLW Milk Tea
PDMS
Smart Juice Organic Pomegranate 100% Juice
DOTP plasticizer, PDMS, PVC
Snapple All Natural Peach Tea
ESBO plasticizer, PVC
Snapple Kiwi Strawberry Tea
ESBO plasticizer, PVC
Snapple Watermelon Lemonade 10% Juice 16 fl oz (plastic bottle)
ESBO plasticizer, PVC
Sparkling Ice (plastic bottle)
Polyethylene
Sprecher Craft Sparkling Water
DOTP plasticizer, PVC
Sprecher Ginger Ale
DOTP plasticizer, PVC
Sprecher Root Beer
DOTP plasticizer, PVC
Spring Grove Soda Pop Rhu-berry
DOTP plasticizer, PVC
Spring Grove Soda Pop Root Beer
DOTP plasticizer, PVC
Sprite
Polystyrene copolymer
Starbucks Cold Brew Cocoa & Honey Coffee Drink
ESBO plasticizer, PVC
Starbucks Frappuccino
ESBO plasticizer, PVC
Starbucks Frappuccino Almond Beverage
ESBO plasticizer, PVC
Starbucks Frappuccino Caramel
ESBO plasticizer, PVC
Starbucks Frappuccino Chilled Coffee
ESBO plasticizer, PVC
Starbucks Vanilla Frappuccino
ESBO plasticizer, PVC
Starbucks Vanilla Latte
ESBO plasticizer, PVC
Starkey Spring Water 2 Miles Deep 1 Liter
PEVA
Stewart's Fountain Classics Root Beer
Phthalate plasticizer, PVC
Stumptown Coffee Roasters Original Cold Brew Coffee 10.5 fl oz
Phthalate plasticizer, PVC
Stumptown Coffee Roasters Original Cold Brew Coffee 10.5 fl oz
Phthalate plasticizer, PVC
Sun Yun Tong Sour Plum Drink Osmanthus Flavor
ATBC plasticizer, PVC
Tazo Iced Black Tea
ESBO plasticizer, PVC
Tazo Iced Green Tea
ESBO plasticizer, PVC
Tea Horse Road Organic White Peach Oolong
Phthalate plasticizer, PVC
Teaonic My Brain Mojo (Herbal Wellness Shot)
Polystyrene copolymer
Teavana Craft Iced Tea Peach Green Tea
DOTP plasticizer, PVC
The Mountain Valley Sparkling Water
Polystyrene copolymer
The Mountain Valley Sparkling Water
Polystyrene copolymer
The Mountain Valley Sparkling Water
Polystyrene copolymer
The Mountain Valley Spring Water
Polystyrene copolymer
Ting Sparkling Grapefruit Flavored Beverage
Phthalate plasticizer, PVC
Ting Sparkling Grapefruit Flavored Beverage
Phthalate plasticizer, PVC
Tomomasu Suika (Watermelon) Soda
Polyethylene
Tonica Ginger Kombucha
ESBO plasticizer, PVC
Tonica Supertonic Goji Grapefruit Kombucha
ESBO plasticizer, PVC
Tonica Supertonic Turmeric Lime Kombucha
ESBO plasticizer, PVC
Topo Chico Mineral Water
Polystyrene copolymer
Topo Chico Mineral Water 25.4 oz
PEVA
Topo Chico Mineral Water 25.4 oz
PEVA

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