Basis of Charges

The fixed monthly sewer charge is based on wastewater demand flow, measured in Equivalent Single Family Residence (ESFR) units for each sewer user class. Since sewer lines cannot be metered, demand flows are established using the average winter water use for users within each class to determine the proportionate level of demand each class places on the sewer system. District Ordinance No. 32, updated in 2023, establishes sewer user classes and their demand flow in ESFR units (see table). Every user within each class is charged based on the same demand flow.