Tier 1 Supply Rate - recovers the of cost of maintaining a reliable amount of supply.

Delta Supply Surcharge - reflects the additional supply costs that Metropolitan faces along with other costs due to the pumping restrictions on the State Water Project. The Delta Supply Surcharge will replace the Water Supply Surcharge effective with the 2009/10 rates.

Tier 2 Supply Rate - set at Metropolitan's cost of developing additional supply to encourage efficient use of local resources.

System Access Rate – recovers a portion of the costs associated with the delivery of supplies.

System Power Rate – recovers Metropolitan’s power costs for pumping supplies to Southern California.

Water Stewardship Rate – recovers the cost of Metropolitan’s financial commitment to conservation, water recycling, groundwater clean-up and other local resource management programs.

Replenishment Water Rate – a discounted rate for surplus system supplies available for the purpose of replenishing local storage.

Treated Replenishment Water Rate – a discounted rate for surplus system supplies available for the purpose of replenishing local storage.

Interim Agricultural Water Rate – discounted rate for surplus system supplies available for the purpose of growing agricultural, horticultural, or floricultural products.

Treated Interim Agricultural Water Program Rate – discounted rate for surplus system supplies available for the purpose of growing agricultural, horticultural, or floricultural products.

Treatment Surcharge – recovers the costs of treating imported water.

Readiness-to-Serve Charge - a fixed charge that recovers the cost of the portion of system capacity that is on standby to provide emergency service and operational flexibility.

Capacity Charge – the capacity charge recovers the cost of providing peak capacity within the distribution system.