If a water meter has been tested at the request of a consumer and has been determined to register fast, the City shall credit the consumer with a sum equal to the percent fast multiplied by the amount of all bills incurred by such consumer within the three months prior to the test. If a meter so tested is determined to register slow, the Water Department may collect from the consumer a sum equal to the percent slow multiplied by the amount of all bills incurred by the consumer for the prior three months. When the Department, on its own initiative, makes a test of a water meter, it shall be done without cost to the consumer, other than his or her paying the amount due the City for water used by him or her as provided in this section if the meter is found to be slow.
(1974 Code § 2.30)