WAC 173-308-193
Management and exemptions for septage
from composting toilets. (1) The residual solids from
composting toilet systems (also known as "waterless toilets")
that receive only domestic waste are considered to be septage.
(2) Septage from composting toilet systems must either be
sent to a permitted facility for further treatment, or it must
be managed in accordance with the requirements in WAC 173-308-270 and other applicable sections of this chapter.
(3) Unless a permit is otherwise required by the
department, persons who land apply septage from composting
toilet systems and sites where the septage is applied are
exempt from the reporting requirements in WAC 173-308-295 and
the permitting requirements in WAC 173-308-310.
(4) All other applicable requirements of this chapter
must be met.
(5) All other local, state, and federal regulatory
requirements must be met.
[Statutory Authority: Chapters 70.95J and 70.95 RCW. 07-12-010 (Order 06-06), § 173-308-193, filed 5/24/07,
effective 6/24/07.]