AAA

AAA’s ATP cleanliness standard requires that 75% of tested surfaces meet the established cleanliness threshold. During each inspection, evaluators test eight high‑touch surfaces in guest rooms and bathrooms. A property passes—and earns the Inspected Clean designation—when at least six of the eight surfaces (75%) produce ATP readings below the threshold. Any surface that exceeds the ATP limit indicates inadequate cleaning. This quantitative, science‑based standard provides a consistent and objective measure of housekeeping effectiveness across all inspected hotels.