You must protect vacuum lines with liquid disinfectant traps and high-efficiency particulate air (HEPA) filters or filters of same or greater efficiency. Make sure filters are checked routinely and maintained or replaced as necessary.
Wash. Admin. Code § 296-823-18025
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. 03-09-110, § 296-823-18025, filed 4/22/03, effective 8/1/03.