It’s no surprise, then, that some people swear they can detect a strange flavour when their water has been boiled in a plastic kettle.
Others never notice a thing. So, what’s really going on?
Here’s a clear, no-nonsense look at whether plastic kettles affect flavour — and what you can do about it.
Why Plastic Kettles Sometimes Affect the Taste
New kettles can have a faint “factory” flavour
When a plastic kettle is brand new, there may be tiny residues left from manufacturing. These aren’t considered harmful, but they can alter the taste of freshly boiled water until the kettle has been used a few times.
Heat can draw out minor flavours from the plastic
Even food-grade plastics aren’t completely inert. Over time and repeated heating, trace amounts of compounds can migrate into the water. UK and EU regulations keep this within safe limits, but “safe” doesn’t always mean “undetectable” – especially for tea lovers with sharp palates.
Cheaper plastics tend to be more noticeable
Budget kettles may use lower-grade plastics that hold on to odours or develop a noticeable taste as they age.
Why Some People Don’t Notice a Thing
Taste sensitivity varies, and many people simply become used to the flavour of water from their kettle. Higher-quality BPA-free plastic kettles are also much better at limiting taste transfer.
Safety: Is It More Than a Taste Issue?
Plastic kettles sold in the UK must comply with strict food-contact regulations. This means they shouldn’t leach harmful chemicals above approved safety levels.
For most households, the issue is about taste, not safety. But if the idea of hot water and plastic together doesn’t sit well with you, there are excellent alternatives.
How To Reduce the “Plastic Taste”
If you like the convenience of your plastic kettle, try these simple steps:
1. Deep-clean a new kettle
Boil and discard the water a few times. A soak with water and bicarbonate of soda or lemon slices can help shift any lingering scents.
2. Keep your kettle descaled
Limescale traps odours and can make the plastic taste seem worse. Regular descaling improves flavour.
3. Pick better-quality BPA-free models
Reputable brands often use plastics that are much more resistant to taste transfer.
Better-Tasting Alternatives to Plastic
If flavour purity is a priority, consider switching to:
Stainless steel kettles – excellent for neutral taste and durability
Glass kettles – clean-tasting and stylish
Stove-top kettles – slower, but completely plastic-free
Many tea drinkers notice an immediate improvement when they switch from plastic to steel or glass.