The System Capacity Charge is the cost for the conveyance and storage facilities necessary to operate the delivery system.
The Water Treatment Capacity Charge is the cost for the connection to the 100-million-gallons-per-day regional water-treatment facility. The Water Treatment Capacity Charge is an additional charge for each new meter of a size less than one inch and a corresponding increase for larger meters. The Water Treatment Capacity Charge excludes customers from the cities of Escondido, Poway, and Del Mar, the member agencies whose jurisdiction cannot be serviced by the 100-mgd regional water-treatment facility.
Effective January 1, 2020, the Water Authority has administratively adjusted the system and water treatment capacity charge schedule as reflected in the Calendar Year 2020 table below.
| Calendar Year 2020 Capacity Charges | |||
| Meter Size, Inches | Factor | System | Water Treatment |
| Less than 1 | 1.0 | $5,301 | $147 |
| 1 | 1.6 | 8,482 | 235 |
| 1.5 | 3.0 | 15,903 | 441 |
| 2 | 5.2 | 27,565 | 764 |
| 3 | 9.6 | 50,890 | 1,411 |
| 4 | 16.4 | 86,936 | 2,411 |
| 6 | 30.0 | 159,030 | 4,410 |
| 8 | 52.0 | 275,652 | 7,644 |
| 10 | 78.0 | 413,478 | 11,466 |
| 12 | 132.0 | 699,732 | 19,404 |
| Calendar Year 2019 Capacity Charges | |||
| Meter Size, Inches | Factor | System | Water Treatment |
| Less than 1 | 1.0 | $5,267 | $146 |
| 1 | 1.6 | 8,428 | 233 |
| 1.5 | 3.0 | 15,802 | 437 |
| 2 | 5.2 | 27,390 | 757 |
| 3 | 9.6 | 50,566 | 1,398 |
| 4 | 16.4 | 86,383 | 2,389 |
| 6 | 30.0 | 158,018 | 4,370 |
| 8 | 52.0 | 273,898 | 7,574 |
| 10 | 78.0 | 410,847 | 11,361 |
| 12 | 132.0 | 695,279 | 19,226 |
