Overtime minute traces of copper (which is an essential element that naturally occurs in water) become trapped within plastic materials used to manufacture a kettle. When these traces then comes into contact with oxygen inside the kettle they undergoes a process called oxidation, turning them black.
It can be washed out using a weak acid solution, such as a kettle descaler, readily available in most supermarkets and online retailers. These are not harmful when used in accordance with the manufacturer’s instructions.
We use cookies to give you the best possible experience with Water Regs UK. Some are essential to provide website functions and ensure the website is secure. We also use cookies to help us understand how people use the site and to make improvements. Click "Accept All" to enable recommended settings or click "Manage cookies" to adjust your settings. For more details, see our Cookie Policy.
