1. (1) A person may not install or use holding tank sewage systems for residential development or expansion of residences, whether seasonal or year-round, except as set forth under subsection (2) of this section.

2. (2) The local health officer may approve installation of holding tank sewage systems only:

   1. (a) For permanent uses limited to controlled, part-time, commercial usage situations, such as recreational vehicle parks and trailer dump stations;
   2. (b) For interim uses limited to handling of emergency situations; or
   3. (c) For repairs as permitted under WAC 246-272A-0280 (1)(d)(i).

3. (3) A person proposing to use a holding tank sewage system shall:

   1. (a) Follow design criteria established by the department;
   2. (b) Submit a management program to the local health officer assuring ongoing operation, monitoring, and maintenance before the local health officer issues the installation permit; and
   3. (c) Use a holding tank reviewed and approved by the department.

[Statutory Authority: RCW 43.20.050(3), 43.20.065, chapters 70A.105 and 70A.110 RCW. WSR 24-06-046, § 246-272A-0240, filed 3/1/24, effective 4/1/25. Statutory Authority: RCW 43.20.050. WSR 05-15-119, § 246-272A-0240, filed 7/18/05, effective 7/1/07.]