Seattle Food Service Water Testing Checklist

Seattle-Specific Water Testing Requirements

Food service establishments in Seattle must comply with Washington State Department of Health (DOH) regulations and local King County health codes. All facilities using private water sources must provide annual water testing results showing bacteriological analysis (total coliform and E. coli testing) through a certified laboratory. Public water system users must maintain documentation of their water provider's most recent Consumer Confidence Report (CCR). Seattle food code also requires facilities to document water temperature, pH levels, and chlorine residuals if using a private system with treatment. The Public Health – Seattle & King County enforcement division references these standards during routine and complaint-based inspections.

Mandatory Testing & Documentation Checklist Items

Establish a water testing log documenting sampling dates, laboratory names, test results, and corrective actions taken. Private well operators must submit bacteriological testing annually (minimum) to a state-certified lab; results must show <1 CFU/100mL for E. coli and <10% positive samples for total coliform in a month. Maintain copies of municipal water system CCRs if using public water; update annually when new reports are released. Record any water treatment adjustments, equipment maintenance, or system repairs in your facility's water safety file. Keep all test results on-site for at least 3 years to demonstrate compliance during health department inspections. Document the source of water used for ice-making, drinking, and food preparation separately if applicable.

Common Violations & Enforcement Actions

Seattle health inspectors frequently cite missing or outdated water testing documentation, expired bacteriological test results, and failure to maintain treatment system records. Using untested private water sources or continuing operation with positive coliform results without remediation triggers critical violations. Improper water storage (uncovered tanks, cross-connections with non-potable lines) and lack of backflow prevention devices on water supply lines are enforcement priorities. Facilities found with inadequate chlorine residuals or incorrect pH levels in treated private systems face conditional operating status or closure orders. Documentation gaps—missing dates, illegible records, or no laboratory certification shown—result in re-inspection citations and financial penalties from King County.

Monitor water safety compliance—start your Panko Alerts free trial today.

Real-time food safety alerts from 25+ government sources. AI-scored by urgency. Less than one bad meal a month — $4.99/mo.