What hygiene action should a plumber perform immediately after opening a drain?

• A. Wipe hands on apron
• B. Sanitize with alcohol gel
• C. Thoroughly wash hands with antibacterial soap
• D. Rinse with water only

Answer: (C)

After opening a drain, hands can be contaminated with bacteria from sewage and other waste, so the best hygiene step is to thoroughly wash with antibacterial soap to remove and kill germs. Wet your hands, apply soap, and rub all surfaces for at least 20 seconds, including under the nails and between the fingers, then rinse under running water and dry with a disposable towel. This is more effective than using only water or relying on alcohol gel when hands are dirty, and wiping on an apron can transfer contaminants. If gloves were worn, wash hands before putting on new gloves or after removing them.