Washington Dental Sterilization & Spore Testing Requirements (2026)
Here's what Washington requires for sterilizer monitoring and record retention — verified against the state's primary source — plus what an inspector checks and a free printable log sheet.
At least weekly
Washington requires biological (spore) testing of each heat sterilizer at least weekly when scheduled patients are treated.
5 years
Washington requires sterilization / spore-test records to be retained for at least 5 years.
WAC 246-817-655 (Sterilization and disinfection, environmental infection prevention and control)
Informational only — not legal advice. Verify current requirements with your state dental board.
What an inspector checks in Washington
When a Washingtonboard inspector or surveyor reviews a practice's sterilization records, they're confirming the monitoring actually happened and is documented. Expect them to look for:
- A spore-test log showing at least weekly biological monitoring of every heat sterilizer in use.
- Records retained for at least 5 years and available on site.
- Chemical-indicator results recorded for processed loads, plus mechanical (time/temp/pressure) confirmation.
- Documented corrective action for any failed spore test, including retest and instrument recall.
- Compliance consistent with WAC 246-817-655 (Sterilization and disinfection, environmental infection prevention and control).
Washington sterilization FAQ
- How often do dental practices in Washington need to run a spore (biological) test?
- Washington requires biological (spore) testing of each heat sterilizer at least weekly when scheduled patients are treated.
- How long must Washington dental offices keep sterilization and spore-test records?
- Washington requires sterilization / spore-test records to be retained for at least 5 years.
- What regulation governs dental sterilization monitoring in Washington?
- In Washington, sterilization monitoring is governed by WAC 246-817-655 (Sterilization and disinfection, environmental infection prevention and control). ClaveLog has verified this against the primary source.
- What should a Washington practice do if a spore test fails?
- Follow the CDC protocol: immediately take the affected sterilizer out of service, review the load, and re-test. Re-process and recall any implicated instruments as directed, document every step with dates and initials, and only return the sterilizer to service after a passing biological test. Keep this corrective-action record with your Washington sterilization log — inspectors look for it.
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