What a business pays per unit of water and sewer in San Diego, copied from City of San Diego Public Utilities. Effective 1 January 2026.
Read this first. This page is arithmetic on the utility's own published rates. It is not an audit, a quote, a bill or advice, and we are not your utility. Your real bill can include charges we leave out (listed on each page), rates change, and the utility's bill and rate ordinance always prevail. Check your own bill or ask your utility before you decide anything. Changing nothing is a valid result.
Charge
Published rate
Water, commercial and industrial
$9.36 per HCF (748 gallons)
Sewer, commercial/industrial flow
$3.85 per HCF of wastewater
Sewer strength: suspended solids (TSS)
$0.68 per pound
Sewer strength: chemical oxygen demand (COD)
$0.27 per pound
Sewer base fee
$11.28 a month
Effective: 1 January 2026. Checked against the official source on 6 November 2026. Reference DYOM-B-SAN-2611.
Sewer is charged on wastewater volume, which can differ from water volume. The calculator uses the sewer volume you enter from your bill.