To become licensed as an on-site wastewater treatment system designer in Washington, you must meet the requirements described below:

(1) Have a high school diploma or GED equivalent.

(2) Have four years of progressive experience in the design of on-site wastewater treatment systems judged suitable by the board. The four years of experience could be a combination of education and work experience related to on-site wastewater system design.

(3) Fully complete the application form to the satisfaction of the board.

(4) Pay all applicable fees.

(5) Receive a passing score on the Washington law review.

(6) Receive a passing score on the Washington state on-site designer examination.

Upon passing the on-site designer examination, the applicant will be licensed as an on-site wastewater treatment system designer.