The commercial/industrial rates were changed for two reasons. The first is the overall revenue generated by commercial customers to be proportionate to the demands they place on the system as measured by the proportion of water used by commercial/industrial customers. The second reason is that most commercial customers have irrigation meters. For residential customers, the City wanted to send price signals to conserve water primarily by using less water for irrigation. Since residential customers don’t have separate irrigation meters, that price signal needed to be incorporated into the overall residential rate structure by tightening the tiers. Since commercial customers have separate irrigation meters, the price signal gets incorporated into the irrigation rate structure.