(1) The department may require the LOSS owner to connect some or all residences, structures, lots and units to a sanitary sewer system consistent with WAC 246-272B-07450 (4)(b).

(2) If the local health officer or local regulations require connection to a sanitary sewer system, the owner shall abandon the LOSS according to WAC 246-272B-07500.

(3) The department shall not approve a new LOSS if sanitary sewer service is available within two hundred feet of the property line, or other distance specified in local regulation, and:

(a) The local board of health or county has passed a local regulation requiring connection to a sanitary sewer system to protect public health; or

(b) Connection to a sanitary sewer system is required by the local comprehensive land use plan or local development regulations.