Any consumer who has previously been a consumer of the city of Petaluma and during the last twelve months has had water service discontinued two times because of nonpayment of bills may be required to reestablish credit by making a cash deposit to secure payment of water bills equal to twice the estimated bill for the service. (Ord. 1940 NCS §2 (part), 1993; Ord. 725 NCS §§1, 2; Ord. 544 NCS §6; prior code §27.51(c).)