What temperature must a high-temperature dishwasher's final sanitizing rinse be?

The final sanitizing rinse of a high-temperature dishwasher must reach a temperature of at least 180°F to effectively kill harmful pathogens and ensure that dishes and utensils are properly sanitized. This high temperature is crucial because it helps to ensure that all residual contaminants are eliminated, making the surfaces safe for food contact.

In a high-temperature dishwasher, the sanitizing rinse uses hot water to achieve this level of sanitation. The heat not only destroys microorganisms but also helps to dry the items quickly, reducing the risk of re-contamination. Achieving temperatures below 180°F may not effectively sanitize the items, posing a risk to food safety in the establishment.

The other temperature options are below the required 180°F, which would fail to meet the established food safety protocols set by health and safety regulations. Setting the rinse at temperatures higher than necessary, while effective, is not standard practice or required; therefore, 180°F is the critical threshold for effective sanitization.