Plumbing properly sized, installed, and maintained; proper backflow devices, indirect drains, no cross-connections
1900
No room temperature storage; proper use of time as a control, procedures available
Source: King County (Seattle), WA health department. Data refreshed October 3, 2026. Results are shown in the health department's own wording. This record is provided for general information; confirm current status with the health department before relying on it.