It follows a similar ban already in effect by Uisce Eireann in Mullingar.
A hosepipe ban will be in place for the south and southeast of the country this weekend as demand for water increases.
Uisce Éireann said the order will be in place for Tipperary, Waterford, Wexford and Cork for the next seven-and-a-half weeks, until Tuesday 16 September.
A similar ban is already in effect for Mullingar in Co Westmeath, Milford in Co Donegal, and areas of Co Meath, until Monday 4 August.
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