Definition of tap water in English:

tap water

noun

  • Water from a piped supply.

    • ‘Thames Water is celebrating its tap water being above average for the third year running.’
    • ‘The new Bill also makes provision for opt-out clauses for people who are set against their tap water being fluoridated.’
    • ‘If your tap water is as hard as my well water, use distilled water or rain water.’
    • ‘If your hair looks dull or is hard to style, the problem could be your tap water.’
    • ‘Do not use tap water supplied in buildings for drinking anywhere on the pilgrimage route.’