If a test so made discloses an error against the consumer of more than one percent (1%) in the meter's registry, the excess of such readings is as applied to the three (3) readings next preceding the test shall be calculated, and the amount of money due the consumer thereon credited to his water account, and the public works department shall bear the entire costs of the test and the deposit of the consumer shall be returned to him. If no error in excess of one percent (1%) against the consumer has been found, the consumer shall pay the costs of the test out of his deposit. (Ord. 632, 7-28-1993)