The Importance of Air Gaps in Providing Safe Food to All

Late last month, I was exploring job tasks that are important for entry-level foodservice managers to understand related to food safety.  The usual items that you would suspect were on the list were certainly included – foodborne outbreaks; temperature danger zone; physical, biological, and chemical contamination; personal hygiene and proper glove use; HACCP systems, etc. But one thing I noticed was missing that really is integral to protecting the food supply in any foodservice operation is air gaps.

I thought back to when I was starting my management career in foodservice, and I know I was certainly aware of what an air gap was, but looking back now, I certainly took them for granted.  After all, I was managing a foodservice operation that had been opened since the 1960s.  Certainly, all the plumbing had air gaps in place, and it wasn’t something that I had to worry about – or so I thought.

There have been instances where a lack of air gaps did cause illness – and most have been in established operations.  For example, a few years ago, a popular quick service Mexican restaurant in California caused over 100 customers to contract Norovirus.  Upon investigation, the health found that contaminated water from a sink that lacked proper air gaps had likely caused the outbreak.

Air gaps may be a dry subject to discuss and learn about, but they are a critical component of food safety…

If you are not quite familiar with what an air gap is, it is a vertical space between the water outlet and the flood level rim of a sink or other plumbing fixture. Essentially, a physical separation between potentially contaminated water and the source of fresh water. It is designed to prevent any backflow of contaminated water into the freshwater supply. This is especially important in areas where food is prepared, cooked, or served and plays an important role in preventing the spread of harmful bacteria, viruses, and other pathogens that can cause foodborne illness.

Why are air gaps so vital to protecting public health? When water pressure drops in a plumbing system, a vacuum can form, causing water to flow backward and potentially contaminate the freshwater supply. An air gap prevents this from happening by creating a physical barrier between the water source and the potentially contaminated water. Without an air gap, contaminated water can easily flow the water supply, ultimately contaminating food and causing illness.

It is important to note that air gaps must be properly installed.  But they must also be properly maintained to be effective. Regular inspections and maintenance are critical to ensuring that air gaps are functioning properly and protecting against cross-contamination. I was reminded of this last week as I was drawing water for a mop bucket in our foodservice lab at the university – and I caught myself filling the bucket with the hose in the mop water, failing to keep the air gap that is needed to protect the water supply. What is the solution?  Cutting the hose, making sure to keep it long enough to be able to effectively fill the mop bucket, but short enough that an employee (or in this case, me!) cannot stick the hose in the mop bucket.

Air gaps may be a dry subject to discuss and learn about, but they are a critical component of food safety in any foodservice operation. Following best practices for air gap installation and maintenance will help any foodservice operator protect their customers and ensure the safety of the food they serve. Risk Nothing. 

Thawing Food with Food Safety in Mind

There comes a time in almost every foodservice operation where you must thaw food. Yes, I know there are those operations who have moved to fresh products only and don’t have a freezer in-house, but I am willing to bet that is more the exception than the norm. I am almost sure that anyone reading this blog who works in a foodservice operation can regurgitate what methods are acceptable to thaw food per the FDA Model Food Code. In case you don’t recall, I will discuss them briefly, but I wanted to spend some time covering these requirements a bit more in-depth – so you not only know WHAT to do, but the WHY we do it that way.

Addressing Major Food Recalls in Your Business

It seems like every year we have a large-scale food recall that reminds consumers and foodservice operators about the importance of food safety. Not that we need reminded, but it certainly puts the topic in the headlines again. Last year, it was the onion recall. This year, it may very well be the Jiff peanut butter recall, of which we are in the midst of.  At the time of the publishing, we are starting to learn more about a potential hepatitis A outbreak linked to strawberries.  If you have not been impacted by either of these recalls in your personal or business life, I would be surprised.

Sanitation, Sanitation, Where Art Thou?

Continuing the theme I picked up on a few months ago, discussing common causes of foodborne illness, I’d like to focus this blog on cross contamination, more precisely sanitation. Sanitation is another issue that employees don’t often do at home, so they discount the importance of it in the food production environment. That is to say that they have never made someone sick at home because they only clean their countertops and they have likely never sanitized their kitchen, so why is it so important in a foodservice facility?