Hydrology University Research
Health Impacts of Drinking Liquids from Different Materials
A quick comparison for safer, smarter hydration — independently researched and reviewed by Hydrology University.
Hydrology University
The Drinkware Materials Report
Pure Choices. Better Hydration.
HEALTH ADVANTAGES
- Lightweight & durable
- Inexpensive
- Shatter-resistant
- Convenient for travel and outdoor use
- Durable & long-lasting
- Does not leach chemicals
- Resistant to rust & corrosion
- Easy to clean
- Maintains taste of liquids
- Lightweight
- Good thermal conductivity (keeps drinks cool)
- Recyclable
- Antimicrobial properties (may help reduce bacteria)
- Traditionally linked to Ayurvedic benefits
- Supports healthy digestion (in moderation)
- Chemically inert (does not leach chemicals)
- Purest taste
- Easy to clean
- Recyclable
- Non-porous & stain-free
POTENTIAL RISKS
- May leach chemicals (BPA, BPS, phthalates) especially when exposed to heat, sunlight or repeated use
- Possible hormone disruption
- Microplastic exposure over time
- Generally very safe
- Low risk of nickel leaching in some people with nickel allergy (rare)
- Possible aluminum leaching, especially with acidic or alkaline liquids
- Excess aluminum exposure may be linked to neurological concerns (research ongoing)
- Excess copper intake can cause nausea, vomiting, abdominal pain & liver damage
- Not suitable for storing acidic liquids (can increase copper leaching)
- Can break and cause physical injury
- Heavier & more fragile than other options
BEST USE / NOTES
- Use BPA-free plastics
- Avoid single-use plastic
- Do not use for hot liquids or microwave
- Replace when scratched or cloudy
- Excellent everyday choice for most people
- Ideal for hot & cold beverages
- Choose food-grade (304 or 316) stainless steel
- Fine for occasional use
- Avoid storing acidic drinks for long periods
- Use BPA-free lined aluminum cans
- Use pure copper vessels for water
- Clean regularly
- Do not store acidic liquids (lemon, tamarind, vinegar, etc.)
- Best for everyday use at home
- Ideal for storing all types of liquids
- Safe for hot, cold & acidic drinks
HU RATING
POOR
EXCELLENT
GOOD
MODERATE
EXCELLENT
PLASTIC
POOR
Health Advantages
- Lightweight & durable
- Inexpensive
- Shatter-resistant
- Convenient for travel and outdoor use
Potential Risks
- May leach chemicals (BPA, BPS, phthalates) especially when exposed to heat, sunlight or repeated use
- Possible hormone disruption
- Microplastic exposure over time
Best Use / Notes
- Use BPA-free plastics
- Avoid single-use plastic
- Do not use for hot liquids or microwave
- Replace when scratched or cloudy
STAINLESS STEEL
EXCELLENT
Health Advantages
- Durable & long-lasting
- Does not leach chemicals
- Resistant to rust & corrosion
- Easy to clean
- Maintains taste of liquids
Potential Risks
- Generally very safe
- Low risk of nickel leaching in some people with nickel allergy (rare)
Best Use / Notes
- Excellent everyday choice for most people
- Ideal for hot & cold beverages
- Choose food-grade (304 or 316) stainless steel
ALUMINUM
GOOD
Health Advantages
- Lightweight
- Good thermal conductivity (keeps drinks cool)
- Recyclable
Potential Risks
- Possible aluminum leaching, especially with acidic or alkaline liquids
- Excess aluminum exposure may be linked to neurological concerns (research ongoing)
Best Use / Notes
- Fine for occasional use
- Avoid storing acidic drinks for long periods
- Use BPA-free lined aluminum cans
COPPER
MODERATE
Health Advantages
- Antimicrobial properties (may help reduce bacteria)
- Traditionally linked to Ayurvedic benefits
- Supports healthy digestion (in moderation)
Potential Risks
- Excess copper intake can cause nausea, vomiting, abdominal pain & liver damage
- Not suitable for storing acidic liquids (can increase copper leaching)
Best Use / Notes
- Use pure copper vessels for water
- Clean regularly
- Do not store acidic liquids (lemon, tamarind, vinegar, etc.)
GLASS
EXCELLENT
Health Advantages
- Chemically inert (does not leach chemicals)
- Purest taste
- Easy to clean
- Recyclable
- Non-porous & stain-free
Potential Risks
- Can break and cause physical injury
- Heavier & more fragile than other options
Best Use / Notes
- Best for everyday use at home
- Ideal for storing all types of liquids
- Safe for hot, cold & acidic drinks
SUMMARY
For overall health and safety: GLASS and STAINLESS STEEL are the best choices for everyday use. Use PLASTIC and ALUMINUM with caution, and COPPER in moderation.
WHAT IS BPA?
BPA (Bisphenol A) is a chemical used in some plastics and can linings. It can leach into liquids, especially with heat or repeated use, and may interfere with hormones (endocrine disruptor).
Read the full BPA explainer
KEY TAKEAWAY
- Old plastic + heat = risk
- BPA-free is better, not perfect
- Glass & stainless steel are the safest long-term
Hydration is essential — choose the right material for a healthier you.
WaterVo™
Pure Choices. Better Living.
HU Trusted Supplier
Once you know what's in your water, you need to do something about it. WaterVO is Hydrology University's recommended supplier for residential filtration systems, atmospheric water generators (AWG), and home hydration equipment vetted against our independent rating standards.
Filtration systems Atmospheric water generators Whole-home solutions
Know what's actually in your water
The right vessel matters — but so does the water inside it. Get a comprehensive lab analysis of your home's water with our $99 testing kit.