A Guide to Safe Drinking Bottle Codes for Children: Everything Moms Need to Know

By Ratna Puspita
3 min read


As a parent, your child's health is your top priority. However, did you know that choosing the wrong water bottle can have negative long-term health consequences? There are tons of cute character water bottles on the market, but not all of them have child-safe plastic codes.

This article will provide a comprehensive guide to safe drinking bottle codes, how to read recycling symbols, and tips for choosing products that are free from harmful chemicals like BPA.

Why is Understanding Plastic Codes Important?

Plastic is more than just plastic. Every water bottle has a triangular symbol with a number inside, called a Resin Identification Code. This code is issued by the Society of the Plastics Industry (SPI) to identify the type of chemicals used in the plastic's manufacture.

Some types of plastic can leach chemicals into water when exposed to heat or repeated use. These substances, such as Bisphenol A (BPA) or Phthalates, can disrupt the hormonal (endocrine) systems of developing children.

Complete List of Plastic Codes and Their Safety Levels

Let's discuss one by one the codes that are usually printed on the bottom of children's drinking bottles so that mothers don't choose the wrong one:

1. Code 1: PET or PETE (Polyethylene Terephthalate)

Usually found on disposable mineral water bottles.

  • Safety: Safe for single use only.
  • Risk: If used repeatedly or exposed to hot water, the polymer coating on this bottle can break down and release carcinogenic substances that can cause cancer. Never refill this bottle for your child's school lunch.

2. Code 2: HDPE (High-Density Polyethylene)

This plastic is much stronger and heat resistant than PET.

  • Security: Very Secure.
  • Advantages: Has the ability to prevent bacterial growth and is the most stable. Often used for baby bottles or juice containers.

3. Code 3: PVC (Polyvinyl Chloride)

This is the most dangerous type of plastic for food/drink containers.

  • Safety: Avoid.
  • Risk: Contains DEHP, which is harmful to the kidneys and liver. Rarely found in high-quality water bottles, but be wary of cheap, unbranded water bottles.

4. Code 4: LDPE (Low-Density Polyethylene)

Often used for squeeze bottles or food containers.

  • Security: Safe.
  • Advantages: Has good resistance to chemicals and is safe enough for repeated use.

5. Code 5: PP (Polypropylene)

This is the winner! If you're looking for the best plastic water bottle for your child, look for the number 5.

  • Safety: Safest for Children.
  • Advantages: Resistant to high temperatures, grease, and chemicals. PP is the best choice for school water bottles because it's strong and won't break even after repeated washing.

6. Code 6: PS (Polystyrene)

Better known as styrofoam or single-use rigid plastic.

  • Safety: Avoid.
  • Risk: When exposed to heat, this plastic releases styrene which can harm brain health and the reproductive system.

7. Code 7: Other

This code covers other types of plastic such as Polycarbonate (PC) or new materials such as Tritan.

Important Note! Be wary of the code 7. If it's PC, it usually contains BPA. However, many premium drinking bottles today use Tritan (also code 7) but are certified BPA-free. Always read the additional label on products marked with code 7.

Characteristics of Drinking Bottles that are Suitable for Children

Apart from looking at the numeric code under the bottle, you also need to ensure the following things:

Easybitsy 650ML Water Bottle for Boys, Early Childhood Education - Elementary School, Astronaut, Dino, Monster, Shark, Soccer - Bunny No brand

  • BPA-Free Label: Make sure it says " BPA-Free " which means the product does not use Bisphenol A.
  • Food Grade: Has a glass and fork logo, which indicates that the material is suitable for use with food and drinks.
  • No Strong Smell: High-quality bottles usually don't emit a strong plastic smell when first opened.
  • Easy to Clean: Choose a simple bottle design without too many narrow curves to prevent the growth of moss or bacteria.

Which One Should You Choose?

For maximum safety, prioritize bottles with Code 5 (PP) or stainless steel (which are less likely to leach plastic chemicals). Always check the bottom of the bottle before purchasing at a supermarket or baby supply store.

Quick Summary for Moms:

  • May be used: Code 2, 4, 5.
  • Must Avoid: Codes 1 (for refills), 3, and 6.
  • Check the Label Again: Code 7 (Choose Tritan/BPA-Free).

By understanding this drinking bottle code guide, you're not only providing a beautiful bottle, but also a long-term health investment for your little one.


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