Where a person who takes a supply of water for domestic purposes from a water authority otherwise than by meter desires to use any of the water so supplied—
(a)for operating a water-cooled or refrigerating apparatus;
(b)for operating any apparatus depending while in use upon a supply of continuously running water, not being an apparatus used solely for heating the water; or
(c)for cleaning, regenerating or supplying motive power to an apparatus used for softening water,
the authority may require that all water so supplied Shall be taken by meter.