Washington Revised Code Title 18. Businesses and Professions § 18.104.040. Powers of department

(1) To issue, deny, suspend or revoke licenses pursuant to the provisions of this chapter;

(2) At all reasonable times, to enter upon lands for the purpose of inspecting, taking measurements from, or tagging any well, constructed or being constructed;

(3) To call upon or receive professional or technical advice from the department of health, the technical advisory group created in RCW 18.104.190, or any other public agency or person;

(4) To adopt rules, in consultation with the department of health and the technical advisory group created in RCW 18.104.190, governing licensing and well construction as may be appropriate to carry out the purposes of this chapter. The rules adopted by the department may include, but are not limited to:

(5) To require the operator in the construction of a well and the property owner in the maintenance of a well to guard against waste and contamination of the groundwater resources;

(6) To require the operator to place a well identification tag on a new well and on an existing well on which work is performed after the effective date of rules requiring well identification tags and to place or require the owner to place a well identification tag on an existing well;

(7) To require the well owner to repair or decommission any well: