Question about Wood's MDK11

Water from a dehumidifier is not necessarily distilled, but it is usually fairly pure. A dehumidifier removes moisture from the air, which means that the water it collects is generally free of impurities such as minerals and other residues. However, it could still contain traces of impurities depending on how the dehumidifier works and how clean the air in the environment is.

slept in physics class?