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hard water

 

Definitions from WordNet

Noun hard water has 1 sense
  1. hard water - water that contains salts (as calcium and magnesium ions) that limit the formation of lather with soap
    --1 is a kind of
    water, H2O

Definitions from the Web

Hard Water

Description:

Hard water refers to water that contains a high concentration of minerals, particularly calcium and magnesium ions. These minerals are usually acquired by the water as it passes through rocks and soil. The hardness of water can vary depending on the location, with some regions having extremely hard water.

Sample Sentences:

  • The high mineral content of hard water can cause scaling on household appliances and plumbing fixtures.
  • It is recommended to use a water softener to reduce the effects of hard water on your hair and skin.
  • Hard water can leave stubborn soap scum on bathroom surfaces.

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