1.1 Proper Handwashing
Key Takeaways
- Wash hands and exposed arms for at least 20 seconds with soap and warm running water
- Scrub fingertips, between fingers, palms, backs of hands, and under the nails
- Use double handwashing after the restroom: once there, again at the kitchen sink
- Wash any time hands could be contaminated, including when switching raw-to-ready-to-eat tasks
- Hand sanitizer only supplements washing and never works on Norovirus or soiled hands
Why Handwashing Is the #1 Control
Contaminated hands are the single most common way pathogens move from a food worker to a customer's plate. S. state and local health department adopts) treats handwashing as a core public-health intervention, and the CDC estimates that proper hand hygiene can cut the spread of diarrheal pathogens substantially. Hands pick up fecal-oral pathogens after using the restroom, raw-protein bacteria after touching chicken or beef, and skin bacteria such as Staphylococcus aureus from the face, hair, and arms. Soap and friction physically lift and rinse these microbes away — which is exactly why a quick splash of water does not count.
The Procedure: 20 Seconds, Soap, Warm Water
The Food Code requires food employees to wash hands and the exposed portions of the arms for at least 20 seconds at a designated handwashing sink supplied with warm running water (commonly cited as about 100°F / 38°C), soap, and a way to dry. The vigorous-scrub portion is the part that matters most, so memorize the five steps in order:
- Wet hands and forearms with clean, warm running water.
- Apply soap and build a lather.
- Scrub vigorously for at least 20 seconds — fingertips, between fingers, palms, backs of hands, and under the fingernails.
- Rinse thoroughly under clean running water.
- Dry with a single-use paper towel or a hand dryer.
Memory tip: 20 seconds is about singing "Happy Birthday" twice. To avoid recontamination, dry with a paper towel and use that towel to turn off a manual faucet and open the restroom door.
The scrub step is where most workers fall short. Friction — not the water temperature alone — is what dislodges microbes, so the 20-second scrub has to be vigorous and reach every surface, not a quick rub of the palms. The frequently missed spots are the fingertips and under the nails, which is exactly where pathogens shelter and exactly where hands first touch food. Drying matters too: wet hands transfer and pick up bacteria far more easily than dry hands, so a thorough dry with a single-use towel or air dryer is part of the procedure, not an afterthought.
Cloth towels and aprons are never acceptable for drying hands because they recontaminate. The handwashing sink itself must stay stocked and unobstructed — soap, warm water, single-use towels or a dryer, and a waste container — and it may not double as a dump sink for dirty utensils, or workers will skip washing entirely.
Double Handwashing After the Restroom
After using the restroom, the recommended best practice is double handwashing: wash once in the restroom, then wash a second time at the kitchen handwashing sink before returning to any food task. Because the restroom is the highest-risk source of fecal-oral pathogens — the route for Norovirus, Hepatitis A, Shigella, and others — the extra wash adds a margin of safety before hands touch food, equipment, or gloves.
When You MUST Wash
The trigger for washing is simple: any time hands could have become contaminated. Exam questions reward you for recognizing task-switching as a trigger, not just "dirty hands."
| Wash your hands… | Why |
|---|---|
| Before starting work and before putting on gloves | Gloves do not replace clean hands |
| After using the restroom (then again at the kitchen sink) | Fecal-oral pathogens — #1 outbreak route |
| After touching raw meat, poultry, or seafood | Prevent cross-contamination |
| After touching the face, hair, body, or a wound | Skin/respiratory bacteria transfer |
| After coughing, sneezing, eating, drinking, or using tobacco | Saliva and respiratory droplets |
| After handling garbage, dirty dishes, chemicals, or money | Removes accumulated contaminants |
| When switching between raw and ready-to-eat tasks | Stops carry-over of pathogens |
Where to Wash — and What Sanitizer Can't Do
Always use the designated handwashing sink only. Never wash hands in a prep sink, dish sink, mop sink, or service sink — those are not built or stocked for hand hygiene and the practice itself is a violation. Equally important for the exam: hand sanitizer is not a substitute for handwashing. Alcohol-based sanitizer may be used only after proper handwashing, and it is ineffective against some key pathogens (notably Norovirus) and useless on visibly soiled hands.
No Bare-Hand Contact With Ready-to-Eat Food
Even perfectly clean hands are not allowed to touch ready-to-eat (RTE) food — anything that will be served without further cooking, such as salad greens, sliced bread, garnishes, sandwich fillings, washed fruit, or cooked food being plated. The Food Code requires a barrier: single-use gloves, tongs, deli tissue, spatulas, or other utensils. This rule exists because hands can carry Norovirus and other pathogens even after washing, and RTE food gets no cooking step to kill them. Putting on gloves does not remove the need to wash first — wash, then glove.
The hierarchy is simple: clean hands are required for everything, and a barrier is additionally required for RTE food.
When you must wash — quick recap
- Before starting work, before handling clean equipment, and before putting on gloves.
- After using the restroom (double-wash), after touching your face/hair/body, after sneezing or coughing, and after eating, drinking, or smoking.
- After handling raw meat, poultry, or seafood, after taking out garbage, and after any task that could contaminate the hands.
What is the minimum total time a food employee must spend washing hands and exposed arms under the FDA Food Code?
After using the restroom, what is the recommended handwashing best practice for a food worker?
Which statement about hand sanitizer is correct for food handlers?
Which sink is the ONLY acceptable place for a food worker to wash their hands?