MATTSON MIDDLE SCHOOL
16400 SE 251ST ST, COVINGTON, WA 98042
Last inspected Nov 2, 2026
Official source: Public Health — Seattle & King County (kingcounty.gov) · All data sources
Passed. Met health requirements at the latest inspection. Some health departments report pass/fail instead of letter grades.
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The record, in plain English
CleanPlate holds 11 inspections on record for MATTSON MIDDLE SCHOOL, spanning December 2021 to November 2026 — every one straight from Public Health — Seattle & King County.
It has held passed across its last two inspections.
No violations were recorded at the most recent inspection.
Every sentence above is computed directly from the official record — CleanPlate adds no opinions. How our grading works →
Inspection history
Nov 2, 2026
✓Apr 30, 2026
✓Sep 16, 2025
✓1 violation
- 3400 - Wiping cloths properly used, stored; sanitizer concentration
Feb 21, 2025
✓Nov 5, 2024
✕1 violation
- 2600 - Compliance with valid permit; operating and risk control plans, and required written procedures
Mar 26, 2024
✓Nov 16, 2023
✓Mar 22, 2023
✓2 violations
- 3200 - Insects, rodents, animals not present; entrance controlled
- 3000 - Proper thawing methods used
Oct 25, 2022
✓Jun 1, 2022
✕2 violations
- 1900 - No room temperature storage; proper use of time as a control, procedures available
- 2600 - Compliance with valid permit; operating and risk control plans, and required written procedures
Dec 2, 2021
✓
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Source: Public Health — Seattle & King County (kingcounty.gov). Data shown unmodified from the official government record. CleanPlate is an independent service, not affiliated with any government agency. See something wrong? Report a data issue.