How to know if there's chlorine on your chicken

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August 4, 2023

You may already be privy to the fact that it is standard procedure for chickens to take a chlorine bath when being processed.

97% of chickens processed in USDA facilities are bathed in chlorine - even certified organic farms and their processors do it.

You see, after a chicken is defeathered, it is always and immediately put into an ice bath. This is important. It cools down the chicken immediately and reduces the risk of the chicken spoiling.

However, when you’re processing a lot of chickens, they all take this bath together. So, if there is one chicken that has, let’s say, a high amount of salmonella, it could spread the bacteria to all the chickens in the bath.

This is why the USDA demands that meat processors use an additional layer of sanitation. The most popular and widely used method is adding chlorine to the ice bath. According to the USDA, chlorine bathed chickens are completely safe for consumption.

However, if you’re reading this blog post, you likely want to avoid anything synthetic, especially in your food. And, you’re not alone. The EU has banned chlorine-washed chickens in European countries for concerns over safety and effectiveness.

How can you know if there’s chlorine on or in your chicken? You can’t! It’s undetectable to the human senses for 99.9% of people.

It’s not required to disclose sanitation ingredients like chlorine, soap, etc on packaging. Given the statistics, it’s pretty safe to assume that, if you purchase chicken in a store in the US, it has chlorine on or in it.

The only way to 100% know if there’s chlorine in your chicken is to know your farmer.

Our farmer is meticulous about his all-natural farming and processing practices. That’s why he's always used a processor that does NOT use chlorine to wash meat.

Originally, he found a wonderful processor that uses a more natural alternative to chlorine - Birko’s Chicxide, a blend of lactic and citric acids. I spoke with a very helpful Birko employee. He gave me some additional information not provided on the product’s technical sheet. Chicxide is made in an industrial facility by the process of fermentation, which I think is pretty neat. The lactic acid is produced by fermenting corn, and the citric acid is produced by fermenting a mixture of cassava and corn.

Now, citric and lactic acids are certainly better than chlorine, but it's likely made from GMO corn and soy. Ahem, more synthetic chemicals. And, it's also a lab-produced ingredient, which is kind of the opposite of "natural". So, we searched for something better.

In 2023, we're happy to report that we switched to a processor that uses NOTHING to wash our chicken. How do they do this? It's air chilled. With air chilling, no ice bath is needed. The birds pass through several chambers where cold, purified air is used to cool the meat. And, that's it. No chemicals AND no worry of contamination.

The farmer is happy to be able to take this extra step for your safety, both limiting your exposure to toxins as well as potentially detrimental bacteria such as salmonella.

How is the air chilled process better than water chilled?

The process of washing chickens in a chemical-laden bath of water results in chicken that has absorbed chemicals, added water weight, and less flavor. In addition, any bacterial microbes found on one chicken is now shared with an entire batch of chickens, creating greater health risks for the consumer. Water pockets can form, impacting the accuracy of cut sizes. This leads customers to pay for more than what they're getting in return.

Customers deserve better than that! Here are some benefits of air chilled chicken:

Air chilling allows for healthier and safer chicken by eliminating the risk of shared bacteria.
When a product is air chilled, there is no added water weight, so you are getting exactly what you paid for.
No added chemicals or water are used during the air chilling process, therefore a full and robust flavor is found when our chicken is served.
Have you ever tried to fry or roast a piece of chicken after it's spent hours submerged? It can be a challenge to get it nice and crispy while also being perfectly cooked. This is not the case with air chilled chicken! Thanks to the time they spend in the chiller, our birds slowly lose water rather than absorbing excess. Less water means quicker browning at a perfect temp - every cook's best friend.
Since the birds haven't already absorbed a ton of water, they take seasoning and marinade much better.
Since the surface isn't as wet as water processed, breading adheres better more completely and stays on while sautéing and frying.

Now isn't that nice? Not only are there less chemicals, but it's also a fairer way to sell chicken AND the chicken is nicer to cook with and more delicious. Win win win!

*Originally published on May 3, 2019. Updated on August 4, 2023.

Pastured Meat

Farming Practices

Our bone broth tested A+++ for heavy metals 🥳 NATURAL AND CLEAN

*Originally published on 3/14/25. Updated on 4/15/25. Over the past few months a bunch of people asked us if we tested our bone broth for toxic heavy metals. When we get the same question a lot, we of course look into it. My first question was --- Is there an issue with toxic metals in bone broth? As it turns out, yes, there "can" be an issue! Heavy metals are naturally present in our environment. We need the "good" heavy metals to thrive: iron, zinc, magnesium, copper, etc. But, we can 100% do without the toxic heavy metals: arsenic, cadmium, lead, mercury, etc. Too many toxic heavy metals can lead to a host of pretty awful issues: nervous system damage, cardiovascular issues, cancer, endocrine disruption, kidney damage, and so on. Our body is designed to excrete heavy metals through urine (and a little bit through sweat, hair, and breastmilk too)... but only so much. There's a limit. If you're overloaded, your body will store those heavy metals in your bones, blood, tissues, and organs. Similarly, if an animal is exposed to heavy metals via food, water, air, dust, or soil, those heavy metals accumulate in the body. Depending on the metal, it can accumulate in the bones, muscle, skin, brain, etc. Maybe the farm's soil or air is contaminated from a nearby factory. Maybe the pipes for the water has lead solder connecting them. Maybe the feed a farm is buying was grown on contaminated soil or processed on contaminated equipment. And, of course, a main purpose of bone broth is drawing out as much as possible from the bones. If there are heavy metals in bones, they will make their way into the broth. This is especially true when you use apple cider vinegar to draw everything out and make it thick and gelatinous and nutrient rich (like our broth). And that led me to my second question --- Should I be concerned about every bone broth? Where is the fear coming from? Well... it seems it might be a little political. There was a study done in the UK in 2013 that scared a lot of people. It's titled "The Risk of Lead Contamination in Bone Broth Diets". This study found high levels of lead in organic chicken bone broth, which is quite concerning. And, in fact, this one study is still cited in articles written today! Let's dig a little deeper. Let's go farther than the short abstract. Here are the broths tested in the study and their test results for lead: (9.5 parts per billion): Broth made from tap water plus skin and cartilage(7.01 parts per billion): Broth made from tap water plus bones(2.3 parts per billion): Broth made from tap water plus meat(0.89 parts per billion): Tap water alone cooked for the same amount of time as a control. But, they only used organic chicken from one farm. And, there's zero information about that farm, their practices, the feed, and the broth recipe. Did they use vinegar or wine in the broth? Was the chicken's water contaminated with lead? What was the quality of the feed and the soil? Were the chickens raised indoors or outdoors? So many unanswered questions! All we get is that it was one "organic chicken" that created a lead issue with broth. Another curious thing is that the broth with skin and cartilage contained more lead than the broth made with just bones. Bones are where lead is stored, so why wouldn't the broth made with bones only contain more lead? It's an odd result. Moreover, the abstract of the study specifically called out "bone broth diets" like GAPS and paleo. They even go so far as to write, "In view of the dangers of lead consumption to the human body, we recommend that doctors and nutritionists take the risk of lead contamination into consideration when advising patients about bone broth diets." That's quite curious. Why are they worried about these diets? Are the researchers anti healing through food? Who funded the research? Is it political? My opinion? This study is not comprehensive. It does not speak to all bone broths. But it does cover a potential issue if the water or animals are overloaded with heavy metals. And, as we know, our poor planet is becoming more and more contaminated with toxins like these toxic heavy metals 😢 What I glean from this study is that we need more research. We need to stay vigilant and test from time to time. We don't need fear to spread and people to stop drinking broth from this one study. Regardless of whether the fear was fabricated or legit, we tested our bone broth anyway. After all, it's always nice to validate that your food choices are as clean as you think. For Miller's, here were my concerns before testing: What if there's mercury in the fishmeal in our chicken feed?What if the soil that our animals live on is contaminated?What is the well water that the broth is made with is contaminated?What if the Celtic sea salt has lots of heavy metals? We actually tested twice. As it turns out, the first test results from March had a LOQ (limit of quantification) that was to high. So, we sent new products in April for testing at a lower LOQ. The results are in! Our bone broth tested A+++ for arsenic, cadmium, lead, and mercury. You can find the actual Eurofins test results right here! For easy reference, here's a chart summarizing the results: You'll notice that, for every sample, the results are "<2.0 μg/kg" and "<4.0 μg/kg". The "<" indicates the limit of quantification (LOQ), the lowest concentration that can be accurately tested using the test procedure in that sample type. So if a "<" result appears, it means that none of that metal was found in the sample above the specific reporting LOQ. Whether or not they were present below this LOQ is information that's not provided by the test. It's also important to note that a μg/kg is a part per billion (ppb). So, for 1 μg/kg, in every billion grams of that food, there would be one gram (or 0.0000001%) of that particular heavy metal. The small numbers matter when it comes to toxic heavy metals, since it doesn't take all that much for your body to become inundated and start experiencing issues or damage. These results are excellent. It means the broth definitely isn't overloaded with toxic heavy metals and are within safe levels. Our amazing customers mentioned Mike Adams to me numerous times after we released the first set of broth results. Mike Adams is an outspoken consumer health advocate, investigative journalist, activist, and science lab director. It turns out Eurofins, the lab we used, is a lab that he recommends. Moreover, our results land us in his highest rating when it comes to heavy metals! I think we're doing pretty great when it comes to providing clean, natural food. But, one result did make me pause. You might be thinking what I first thought -- "But wait, you got a reading above 4.0 μg/kg for arsenic. Isn't that bad?" Let's dive in -- What's up with arsenic? First off, it's important to note that there are organic forms of arsenic as well as inorganic forms. Our body can handle the organic kind pretty well. But, the inorganic kind is carcinogenic. Our test results show the level of all arsenic, and it doesn't divide inorganic and organic. Second, as you can see from the Health Ranger rating above, your body can tolerate way more arsenic than the other three toxic heavy metals. It can handle 6x more than cadmium, 25x more than lead, and 103x more than mercury. Third, it was a mystery to me how arsenic had a reading in the ground beef but not the beef bone broth. Thankfully, that has a pretty easy explanation. Whereas lead mainly accumulates in the bones, arsenic accumulates more in the organs and muscles. And, of course, meat is muscle. And finally, it was also quite perplexing how arsenic showed in our beef as well as our chicken. You see, our beef and chicken are grown on two separate farms (hours apart) and are processed at two separate processors (also hours apart). They're fed two completely separate diets, too! My only explanation is farmland in general or maybe even our environment in general. Organic arsenic has always been naturally present in the soil and water. It's just there in small amounts. But, levels nowadays are likely higher due to overuse of products laden with inorganic arsenic over time. Starting in the 1940s, conventional farmers would include drugs filled with inorganic arsenic in the feed for pigs and chickens and turkeys to encourage fast growth and prevent disease. Ugh. This actually led to concerns about arsenic poisoning, and that that practice was banned recently, in 2016. It makes me think that all the agri-waste has contaminated our farmland a bit, perhaps in both the soil and water. And then of course there are synthetic pesticides and herbicides and fertilizers that may contain inorganic arsenic. And their use on conventional farms might runoff everywhere else. Since our meats are grown on farms that have been naturally managed for some time, I think that's why our arsenic levels were so low, especially compared to conventional meat. Now, let's compare our results to food in general. Ours are extremely low. The data below is based on a few scientific studies: Arsenic: Rice contains anywhere from 90-450 ppb (that includes that rice cereal for babies, too). Meat and poultry in general typically contain 100-200 ppb. The max ours has is 6.8 ppb.Cadmium: Spinach contains 117-222 ppb. Rice contains 6-19 ppb. Meat and poultry in general contain about 10 ppb. Our has less than 2 ppb.Lead: Meat and poultry in general contain about 25 ppb. Our has less than 4 ppb.Mercury: The larger the fish, the more time it has to accumulate mercury. Swordfish and king mackerel can have about 1,000 ppb. Meat and poultry in general contain about 10-50 ppb. Ours has less than 2ppb. Wow! Putting that into perspective, it looks like our broth and meat are quite clean and extremely low in toxic heavy metals! Are you satisfied with our heavy metal results? Do you think we should take further action? Should we test other products? Do you worry about toxic metals (or other junk) in your food? Where have your fears stemmed from? I'd love to hear from you. You can comment below (no account required) or contact us 😊 ----- Sources The risk of lead contamination in bone broth dietsBone Broth and Lead Toxicity: Should You Be Concerned?Bone Broth and Lead Contamination: A Very Flawed Study in Medical HypothesesBone Broth, Collagen, and Toxic Metals: A Research ReviewInorganic arsenic toxicosis in a beef herd Consumer Wellness Center Labs Heavy Metal RatingsArsenic in Meat and Animal ProductsInorganic arsenic toxicosis in a beef herdArsenic in brown rice: do the benefits outweigh the risks?A Survey of the Levels of Selected Metals in U.S. Meat, Poultry, and Siluriformes Fish Samples Taken at Slaughter and Retail, 2017–2022Arsenic in your foodDietary exposure to cadmium from six common foods in the United StatesMercury Content in Commercially Available Finfish in the United States Author links open overlay panel

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I was misinformed. At some point, I read that raw milk contains lactase. As it turns out, this is not true! It is true that raw milk contains many live enzymes that are inactivated during pasteurization. But, what about lactase? I’ve heard many anecdotal stories from people who are lactose intolerant... but can handle raw milk or fermented dairy. If raw milk, yogurt, kefir, or cheese doesn’t contain lactase, then why is that?

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How to know if there's chlorine on your chicken

97% of chickens processed in USDA facilities are bathed in chlorine - even certified organic farms and their processors do it.

How can you know if there’s chlorine on or in your chicken? You can’t! It’s undetectable to the human senses for 99.9% of people.

The only way to 100% know if there’s chlorine in your chicken is to know your farmer.

How is the air chilled process better than water chilled?

Now isn't that nice? Not only are there less chemicals, but it's also a fairer way to sell chicken AND the chicken is nicer to cook with and more delicious. Win win win!

More from the blog

Our bone broth tested A+++ for heavy metals 🥳 NATURAL AND CLEAN

Raw milk or fermented dairy and lactose intolerance. Why might it help?

Celebrating the Heritage of Corn on National Popcorn Lovers Day

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Miller's Bio Farm, 523 Valley Road, Quarryville, PA 17566