Capacity Charges

The Capacity Charge (sometimes called a connection fee) is the fee that the NapaSan charges when a new home or commercial tenant connects to the sewer system, or expands its impact on the system.

View the 2018 Capacity Charge and Cost of Service Study here

View the Capacity Charge Methodology and Development Fee Review here.  

  1. Commercial & Industrial
  2. Residential

Calculating Capacity Charges

On July 1, 2023 the capacity charge per EDU increased from $11,087 to $11,519.  This charge will be in effect through June 30, 2024.  

See Title 5 of the NapaSan Code for the formula used to calculate capacity charges for commercial and industrial customers.