HUD HCV Guidebook § 3.1.6

The utility allowance schedule must21 also provide allowances for all other utilities and services for which, in
the PHA’s locality, the tenant is typically responsible, and which are required for compliance with HQS. For
example, if firewood used as a primary heating fuel, or the required annual flushing of a septic tank in an area
without public sewers, these would be included on the utility allowance schedule.