(1) Persons may not install or operate a LOSS without an operating permit as provided in this chapter.

(2) Owners shall obtain an operating permit from the department and shall renew it annually.

(3) LOSS permitted prior to the effective date of this chapter, that do not fully comply with the design, construction, and operating requirements in this chapter may continue in service without upgrade until modified, expanded, or repaired. The department shall require upgrades if it determines there is a threat to public health or the environment.

(4) The LOSS owner shall operate and maintain the LOSS to consistently and reliably treat sewage.

(5) The department may impose more stringent requirements than those described in this chapter when necessary to protect public health or the environment.