As of February 1, 2020, the City of Tustin moved to a fixed-rate fee system from a tiered-rate system. This means all customers will be charged the same flat fee of $2.79 for each unit of water (748 gallons) used regardless of how much water is consumed. Since 2014, Tustin’s unit cost has ranged from $0.84 to $4.05 per unit depending on amount of usage (i.e. tiered system). On each January 1 over the next four years (2021-2024), the new unit cost of $2.79 will increase by 5 percent as part of this five-year rate plan.