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MERCER ISLAND HIGH SCHOOL

9100 SE 42ND ST, Mercer Island, WA 98040 · Restaurant (School Lunch Program)

Inspection summary

MERCER ISLAND HIGH SCHOOL has been inspected 45 times by Public Health – Seattle & King County since January 11, 2006. The most recent inspection, on September 28, 2026, found no infractions.

31 of 45 inspections on record found no infractions at all. In the past 12 months there were 2 inspections with 0 infractions recorded. The higher-risk findings here relate to: Food temperature control, Handwashing and staff hygiene and Cleaning and sanitizing.

The last 5 inspections in a row found no infractions. The number of infractions per inspection has stayed roughly the same over time.

What these findings mean

Health authorities word their violations differently, so we group them by what they mean for food safety. Higher-risk findings are the ones inspectors treat as critical, because they can directly make someone sick.

  • Food temperature controlHigher risk

    Bacteria multiply fastest between about 4 °C and 60 °C (40 °F to 140 °F). Inspectors check that cold food stays cold, hot food stays hot, cooked food is cooled quickly, and that staff have accurate thermometers. Temperature problems are one of the most common causes of food poisoning, so these are treated as critical findings.

    Recorded 6 times across 5 separate inspections, most recently on June 3, 2022. For example: 2120 - Proper cold holding temperatures; between 42 to 45 degrees Fahrenheit (F) (6 to 7 degrees Celsius (C))

  • Handwashing and staff hygieneHigher risk

    Hands are the main way germs like norovirus move from people to food. Inspectors look for stocked, accessible handwashing sinks, staff washing hands when required, hair restraints, and sick employees being kept away from food. Gaps here can spread illness quickly.

    Recorded 3 times across 3 separate inspections, most recently on March 6, 2024. For example: 3600 - Proper eating, tasting, drinking, or tobacco use

  • Cleaning and sanitizingHigher risk

    Anything that touches food, such as cutting boards, dishes and utensils, must be washed, rinsed and sanitized. Inspectors check dishwasher temperatures, sanitizer strength and how wiping cloths are stored. Poor sanitizing lets bacteria survive from one use to the next.

    Recorded 3 times across 3 separate inspections, most recently on June 3, 2022. For example: 4100 - Warewashing facilities properly installed, maintained, used; sanitizer concentration; test strips available and used

  • Protecting food from contaminationHigher risk

    This covers how food is stored, prepared and displayed: raw meat kept away from ready-to-eat food, food covered and stored off the floor, and nothing dripping or splashing into it. Cross-contamination from raw to cooked food is a direct route for salmonella and E. coli.

    Recorded 3 times across 3 separate inspections, most recently on September 29, 2021. For example: 3300 - Potential food contamination prevented during delivery, preparation, storage, display

  • PestsHigher risk

    Signs of mice, rats, cockroaches or flies, or gaps and clutter that let them get in or hide. Pests carry bacteria and can contaminate food and surfaces, so evidence of activity is treated seriously and usually triggers a follow-up visit.

    Recorded once on March 6, 2024. For example: 3200 - Insects, rodents, animals not present; entrance controlled

About this data

These results come from Public Health – Seattle & King County, which inspects food premises and other public facilities in this area. We republish the authority's public disclosure data and refresh it regularly; the official record is the final word.

45 inspections

  1. Routine Inspection/Field Review

    0 infractions

  2. Routine Inspection/Field Review

    0 infractions

  3. Routine Inspection/Field Review

    0 infractions

  4. Routine Inspection/Field Review

    0 infractions

  5. Routine Inspection/Field Review

    0 infractions

  6. Routine Inspection/Field Review

    2 infractions

    • 3600 - Proper eating, tasting, drinking, or tobacco use
      • BLUE
    • 3200 - Insects, rodents, animals not present; entrance controlled
      • BLUE
  7. Routine Inspection/Field Review

    0 infractions

  8. Routine Inspection/Field Review

    0 infractions

  9. Routine Inspection/Field Review

    0 infractions

  10. Routine Inspection/Field Review

    2 infractions

    • 4100 - Warewashing facilities properly installed, maintained, used; sanitizer concentration; test strips available and used
      • BLUE
    • 2120 - Proper cold holding temperatures; between 42 to 45 degrees Fahrenheit (F) (6 to 7 degrees Celsius (C))
      • RED
  11. Routine Inspection/Field Review

    1 infraction

    • 3300 - Potential food contamination prevented during delivery, preparation, storage, display
      • BLUE
  12. Routine Inspection/Field Review

    0 infractions

  13. Routine Inspection/Field Review

    0 infractions

  14. Routine Inspection/Field Review

    1 infraction

    • 3700 - In-use utensils properly stored
      • BLUE
  15. Routine Inspection/Field Review

    0 infractions

  16. Routine Inspection/Field Review

    2 infractions

    • 2600 - Compliance with risk control plans, variances, plan of operation; valid permit; appr procedur
      • RED
    • 0600 - Adequate handwashing facilities
      • RED
  17. Routine Inspection/Field Review

    3 infractions

    • 4100 - Warewashing facilities properly installed,...
      • BLUE
    • 2120 - Proper cold holding temperatures ( 42° F to 45° F)
      • RED
    • 2600 - Compliance with risk control plans, variances, plan of operation; valid permit; appr procedur
      • RED
  18. Routine Inspection/Field Review

    0 infractions

  19. Routine Inspection/Field Review

    0 infractions

  20. Routine Inspection/Field Review

    0 infractions

  21. Routine Inspection/Field Review

    0 infractions

  22. Routine Inspection/Field Review

    0 infractions

  23. Routine Inspection/Field Review

    0 infractions

  24. Routine Inspection/Field Review

    0 infractions

  25. Routine Inspection/Field Review

    0 infractions

  26. Routine Inspection/Field Review

    1 infraction

    • 3300 - Potential food contamination prevented during delivery, preparation, storage, display
      • BLUE
  27. Routine Inspection/Field Review

    1 infraction

    • 0400 - Hands washed as required
      • RED
  28. Routine Inspection/Field Review

    2 infractions

    • 2800 - Food received at proper temperature
      • BLUE
    • 2120 - Proper cold holding temperatures ( 42° F to 45° F)
      • RED
  29. Routine Inspection/Field Review

    1 infraction

    • 3300 - Potential food contamination prevented during ...
      • BLUE
  30. Routine Inspection/Field Review

    0 infractions

  31. Routine Inspection/Field Review

    0 infractions

  32. Routine Inspection/Field Review

    1 infraction

    • 4100 - Warewashing facilities properly installed,...
      • BLUE
  33. Return Inspection

    0 infractions

  34. Routine Inspection/Field Review

    1 infraction

    • 1720 - Proper hot holding temperatures; between 130° F...
      • RED
  35. Routine Inspection/Field Review

    0 infractions

  36. Routine Inspection/Field Review

    0 infractions

  37. Consultation/Education - Field

    0 infractions

  38. Routine Inspection/Field Review

    0 infractions

  39. Routine Inspection/Field Review

    0 infractions

  40. Routine Inspection/Field Review

    0 infractions

  41. Consultation/Education - Field

    0 infractions

  42. Routine Inspection/Field Review

    0 infractions

  43. Routine Inspection/Field Review

    1 infraction

    • In-use utensils properly stored
      • BLUE
  44. Consultation/Education - Field

    0 infractions

  45. Routine Inspection/Field Review

    1 infraction

    • Proper cooling procedure
      • RED

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