Have you ever wondered if bottled water is as safe as it seems? While many people know to inspect the bottle’s bottom for cracks or damage, that’s just the tip of the iceberg. To truly protect your health, you need to look deeper—specifically, at the type of plastic used in the bottle.
Every plastic bottle comes with a label or symbol indicating the type of plastic it’s made from. This little detail carries major health implications, as different plastics release varying levels of chemicals into the contents they hold—especially over time or under heat.
Here’s your ultimate guide to decoding plastic bottle labels and making healthier, more eco-conscious choices.
Plastic Bottle Codes and What They Really Mean
1. PET or PETE (Polyethylene Terephthalate)
Commonly used in: Single-use water bottles
This is the most widely used plastic in the world. Though convenient, PET bottles can leach heavy metals and hormone-disrupting chemicals into the water, especially if reused or exposed to heat.
Important: PET is designed for one-time use only. Reusing it increases the risk of bacterial contamination and chemical leaching.
2. HDP or HDPE (High-Density Polyethylene)
Commonly used in: Milk jugs, juice bottles, detergent containers
This is one of the safest plastics for storing drinking water. It releases virtually no harmful substances and is highly recyclable, making it a great choice for both your health and the planet.
Best Choice: If you must buy bottled water, opt for HDPE bottles whenever possible.
3. PVC or V (Polyvinyl Chloride)
Commonly used in: Vegetable oil bottles, toys, blister packaging
PVC plastic emits at least two toxic chemicals known to interfere with hormone function.
Avoid it: Despite its durability, PVC is not recommended for food or water storage.
4. LDPE (Low-Density Polyethylene)
Commonly used in: Some water bottles and grocery bags
While relatively safe for bottled water, LDPE can pose risks in other forms, like plastic shopping bags, which can transfer dangerous chemicals into food items.
Caution: LDPE is safe in bottles, but avoid using it for food storage in bags.
5. PP (Polypropylene)
Commonly used in: Yogurt containers, syrup bottles
This plastic is heat-resistant and generally considered safe. It doesn’t leach chemicals easily and is often used in food packaging.
Safe Option: PP is a good choice for containers exposed to moderate heat.
6. PS (Polystyrene)
Commonly used in: Disposable coffee cups, takeout containers
While lightweight and inexpensive, PS releases harmful chemicals when heated. It’s not suitable for hot drinks or food.
Not for Heat: Avoid using PS containers for anything warm.
7. PC or Unlabeled Plastics (Polycarbonate)
Commonly used in: Water cooler bottles, food containers
This is considered the most dangerous type of plastic, as it often leaches Bisphenol A (BPA)—a chemical linked to severe hormone disruption and endocrine system damage.
Avoid at all costs: Never store food or water in polycarbonate containers.
The Takeaway: Glass Over Plastic
Even the safest plastics come with some degree of risk. Whenever possible, choose glass containers for drinking water and food storage. Glass is chemically inert, reusable, and environmentally friendly.
Knowledge is power—but also responsibility. With these insights, you can make smarter choices for your health and the environment.
Quick Checklist Before Buying Bottled Water:
- Look for HDPE or PP codes.
- Avoid PET, PVC, PS, and especially PC.
- Never reuse single-use plastic bottles.
- When in doubt, go for glass.
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