on-site wastewater treatment; general permit

Added new definitions for 'liquid effluent collection system', 'septic tank effluent gravity system', and 'septic tank effluent pump system' to clarify what systems are covered under the regulations.

Modified permit requirements to specify that facilities must be installed by manufacturer-certified installers and operated by manufacturer-certified service providers.

Added a transition requirement for larger facilities (3,000+ gallons per day) to initiate permit transitions within 180 days of revised rules, with a general permit for liquid effluent collection systems required by January 1, 2026.

Clarified that general permits apply to defined classes of facilities where individual permit costs cannot be justified by environmental or public health benefits.

Added provisions allowing the director to require financial assurance for larger facilities and to revoke, modify, or suspend general permits when necessary for compliance.