Examinees who do not pass the exam by January 15, 2027, may be required to submit a new application, due to upcoming system upgrades. Candidates are advised to retain a copy of their exam approval notification for future reference.
Looking for a status update?
If you applied online and it has been more than 4 weeks please contact our office.
On-Site Wastewater Designers License by Exam
All applicants are required to take the On-Site Wastewater Treatment Systems Designers exam. To be considered for approval you must submit a complete application to the board office.
You aren't required to get an on-site designer license if you are:
- A licensed professional engineer
- An employee or subordinate working under the direct supervision of a licensed designer or professional engineer.
Application Requirements
- A high school diploma or equivalent
- At least 4 years of experience showing increased responsibility as defined in WAC 196-32-020
- A passing score (80%) on the Washington On-Site Designer/Inspector Law Review
- Pay application fee
Required Documentation
- Submit your application and a completed Washington On-Site Designer/Inspector Law Review
- Law Reviews received prior to application will not be accepted
- Work Experience Form and Experience Verification Form (see forms for instructions)
- A minimum of 2 verifications are required
- Ensure your verifier’s email is correct and they can access it. If the verifier or email is incorrect, you must submit a new Work Experience form. Staff cannot change this information after submission.
How to Apply
Important: do not apply until you meet all requirements
- Login or Sign-up to apply and pay your application fee.
- Access our service Board of Registration for Professional Engineers & Land Surveyors (BRPELS).