Sch 6 para 2 Requirements for use for trade
No person may use for trade a water meter for the supply of potable water to domestic premises in the temperature range from 0.1°C to and including 30°C (“a cold water meter”) unless— (a) it is compliant with the essential requirements applicable to cold water meters (other than the provisions relating to maximum permissible errors); (b) it operates within the maximum permissible errors set out in paragraph 3; and (c) the requirements of paragraph 4 are complied with.