No variance to the design standards is allowed under delegated permitting authority. If a variance to the design standards is needed, the local public works department or rural water system must apply to the department for an individual construction permit following the wastewater permit procedures in rule 567-60.4 (455B) and rule 567-64.2 (455B) and the water supply permit procedures in 567-subrule 40.4(1).
Iowa Admin. Code rr. 567-9.6