San Diego bills for water service on a bi-monthly schedule, but the average monthly base rate for single-family use is $20.31 as of 2015. There is an additional charge based on how many hundreds of cubic feet of water are used, starting at $3.90 bi-monthly per HCF.
The City of San Diego charges the base rate to single-family domestic customers for water meter usage and calculates this charge according to the meter size. For multi-family customers, the water bill also includes the meter base fee, as well as a charge of $4.65 per HCF. Commercial and industrial customers pay $4.47 per HCF in addition to the meter fee.