Exempt services: On-site wastewater design professionals

State laws recognize that certain areas of expertise are common to professionals other than on-site designers and inspectors. They provide the following exemptions in RCW 18.210.150: Persons exempt from licensure:

Professional engineer

A licensed professional engineer isn’t required to be licensed in as an on-site wastewater design professional if he or she performs the design work in accordance with Title 196 WAC.

Employees of a professional licensee

An employee or a subordinate of a licensed professional engineer or on-site wastewater design professional isn’t required to be licensed as an on-site wastewater design professional if the work is:

  • Performed under the direct supervision of the engineer or on-site wastewater design professional.
  • and
  • Doesn’t include final design decisions.

Questions?

Contact us: DFCcompliance@dol.wa.gov

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