A plastic taste often comes from a new or poorly rinsed reservoir, a water filter, or water sitting in the tank. Clean and rinse the removable tank first, then isolate the source before using the machine again.
If your espresso machine’s water reservoir makes water taste like plastic, remove and clean the tank first. New tanks can retain packaging or manufacturing odors, and a filter or water that has been sitting in the reservoir can also affect taste. If the taste is chemical, unusually strong, or persists after careful cleaning, stop using the machine for drinking water and contact the manufacturer.
Clean and rinse the reservoir
Turn the machine off and let it cool. Remove the reservoir and any removable filter, then wash the tank with warm water and a small amount of mild dish soap. Rinse it thoroughly several times so no soap remains. Follow the machine’s manual for cleaning instructions; do not put the tank in a dishwasher unless the manufacturer says it is dishwasher-safe.
Fill the tank with fresh drinking water, let it sit briefly, and smell and taste a small amount. If the plastic taste is gone, refill the reservoir and follow the manual’s instructions for flushing water through the machine before making coffee.
Check the water and filter
If the tank still smells or tastes off, try fresh water from a different safe drinking-water source. Water that has been standing in a warm reservoir can develop an unpleasant taste, so empty the tank when the machine will not be used for an extended period and refill it with fresh water.
If the machine has a water filter, remove it temporarily only if the manual allows this, then compare the water’s taste. A new or overdue filter can affect flavor. Replace it with a compatible filter and follow the specified soaking or flushing steps; do not assume every filter fits every machine.
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If the taste remains after cleaning
Taste water from the reservoir before it enters the machine, then compare it with water dispensed by the machine. If the reservoir water tastes normal but dispensed water does not, the issue may be in the machine’s internal water path rather than the tank. Follow the manual’s cleaning guidance, and avoid adding vinegar, baking soda, or other cleaners unless the manufacturer specifically recommends them.
Check that the tank is seated correctly and that its seals are clean and undamaged. A damaged tank, seal, or water-contact component may need a compatible replacement. If the smell resembles solvent or chemicals, the tank is visibly damaged, or the taste persists after cleaning and fresh water, stop using the machine for beverages and contact the manufacturer or an authorized service provider. Do not open the machine’s electrical housing yourself.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
FAQ
Is a plastic taste normal in a new espresso machine?
A mild odor or taste can come from a new reservoir or water-contact parts, but it should improve after cleaning, thorough rinsing, and the flushing steps in the manual. If it persists or smells chemical, contact the manufacturer.
Should I use vinegar to remove the plastic taste?
Only use vinegar if the manufacturer specifically recommends it. Some machines or components can be damaged by unapproved cleaners. Start with mild dish soap for the removable tank and rinse it thoroughly.
How can I tell whether the reservoir or the machine is causing the taste?
Taste or smell fresh water in the clean reservoir before it enters the machine, then compare it with water dispensed by the machine. If only the dispensed water tastes off, consult the manual’s cleaning guidance for the internal water path.
When should I replace the reservoir?
Consider a compatible replacement if the tank is cracked, discolored, has a persistent chemical odor, or still affects water taste after thorough cleaning. Confirm the exact machine compatibility with the manufacturer.
