McDonald's

Official wording

Immediately provide hot running potable water of at least 120°F or greater for the entire food preparation facility., 114143(d), 114266, 114268, 114268.1, 114271, 114272 - Provide walls / ceilings using materials that are durable, smooth, nonabsorbent, light-colored, and washable surfaces. All floor surfaces, other than the customer service areas, shall be approved, smooth, durable, and made of nonabsorbent material that is easily cleanable. Approved base coving shall be provided in all areas, except customer service areas and where food is stored in original unopened containers. Food facilities shall be fully enclosed. All food facilities shall be kept clean and in good repair.

In plain English

Food was not kept cold enough, hot enough, cooled fast enough, or cooked or reheated to the right temperature. Bacteria grow quickly in the "danger zone" between 41°F and 135°F, which makes this one of the most important food-safety checks.