Washington Revised Code Title 70A. Environmental Health and Safety § 70A.105.060. Additive regulation

(1) After July 1, 1994, a person may not use, sell, or distribute a chemical additive to on-site sewage disposal systems.

(2) After January 1, 1996, no person shall use, sell, or distribute any on-site sewage disposal additive whose ingredients have not been approved by the department.

(3) Each manufacturer of an on-site sewage disposal system additive that is sold, advertised, or distributed in the state shall submit the following information to the department:  (a) The name and address of the company;  (b) the name of the product;  (c) the complete product formulation;  (d) the location where the product is manufactured;  (e) the intended method of product application;  and (f) a request that the product be reviewed.

(4) The department shall adopt rules providing the criteria, review, and decision-making procedures to be used in reviewing on-site sewage disposal additives for use, sale, or distribution in the state.  The criteria shall be designed to determine whether the additive has an adverse effect on public health or water quality.  The department may charge a fee sufficient to cover the costs of evaluating the additive, including the development of criteria and review procedures.  The fee schedule shall be established by rule.

(5) The department shall issue a decision as to whether a product registered pursuant to subsection (3) of this section is approved or denied within forty-five days of receiving a complete evaluation as required pursuant to subsection (4) of this section.

(6) Manufacturers shall reregister their product as provided in subsection (3) of this section each time their product formulation changes.  The department may require a new approval for products registered under this subsection prior to allowing the use, sale, or distribution within the state.

(7) The department may contract with private laboratories for the performance of any duties necessary to carry out the purpose of this section.

(8) The attorney general or appropriate city or county prosecuting attorney is authorized to bring an appropriate action to enjoin any violation of the prohibition on the sale or distribution of additives, or to enjoin any violation of the conditions in RCW 70A.105.080.

(9) The department is responsible for providing written notification to additives manufacturers of the provisions of this section and RCW 70A.105.070 and 70A.105.080.  The notification shall be provided no later than thirty days after April 1, 1994.  Within thirty days of notification from the department, manufacturers shall provide the same notification to their distributors, wholesalers, and retail customers.