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Steven Wayne PetersenLicensed

Licensed septic contractor based in Shelton, Mason County, WA

License details

License number5200187
License typeOn-Site Wastewater Inspector
License statusActive, Washington DOH credential
Based inShelton, Mason County, Washington

"Based in" is the city and county of the address on the business's license record.

What this license covers

  • Inspection: licensed to inspect existing septic systems; the license you want for a home-purchase inspection.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #5200187 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Washington State Dept. of Health - Credential Search, last checked 2026-08-17. Look it up at the issuing agency.

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