Water Management (General) Regulation 2018
135 Testing of meters
(1) An owner or an occupier of land for which a meter has been installed may apply to the relevant water supply authority to have the meter tested.(2) An application to have a meter tested must be in a form approved by the water supply authority.(3) If, on being tested, a meter registers less than 3% above the quantity of water passed through it, the person who required the test must pay such fee as the water supply authority determines for the expenses of the test.(4) If, on being tested, a meter registers 3% or more above the quantity of water passed through it—(a) an adjustment proportionate to the percentage of error is to be made in the reading objected to and in any further reading up to the time of removal of the meter, and(b) the water supply authority is to bear the expenses of the test.(5) No adjustment is to be made if a meter registers within 3% of the quantity of water passed through it.(6) If, at any reading, a meter is registering inaccurately or has ceased to register, the water supply authority is entitled to adjust the charge for water supplied during the period to which the reading relates on the basis of a daily consumption equal to the average daily consumption during a corresponding previous period.(7) If there was no reading for a corresponding previous period, or if the water supply authority is of the opinion that an adjustment on the basis of such a period would not be reasonable, it may assess the quantity of water used or may adjust the charge on such other basis as may be mutually agreed on between it and the consumer.