Bozeman "Biohacking": Winter Broth Hiding Tap Harm?

By Franklin Everett Shaw

May 25, 2026

The aroma of simmering bones fills kitchens across Bozeman as winter descends. It’s a comforting ritual, a promise of warmth and nourishment against the Montana chill. But could this seemingly harmless practice be inadvertently exposing you to more heavy metals than usual? The answer, surprisingly, might be yes, and it hinges on the quality of your tap water and how you prepare your bone broth.

Let’s dive into the potential risks and, more importantly, how to mitigate them.

Bozeman’s water source is primarily groundwater, which is generally good. However, groundwater can still contain naturally occurring heavy metals like arsenic, lead, and copper, leached from the surrounding rock formations. Winter presents a unique challenge. As temperatures plummet, water pipes can age and corrode, potentially releasing more lead into the water supply, especially in older homes in areas like the Southside or near Montana State University. Furthermore, increased water usage for heating systems and, yes, bone broth, can exacerbate the problem by drawing more water through potentially compromised pipes.

So, how do you know if your water is safe? The first step is testing. Don’t rely solely on the city’s annual water quality report. While informative, it provides an average across the entire system and doesn’t reflect the specific conditions in your pipes.

Here’s a step-by-step guide to testing your Bozeman tap water for heavy metals:

Choose a certified lab: Look for a lab certified by the Montana Department of Environmental Quality (DEQ). You can find a list on their website. This ensures the lab follows proper testing protocols and provides accurate results. Consider labs like Energy Laboratories, Inc. or Montana Environmental Lab.
Select the right test: Specify that you want a heavy metals test, including arsenic, lead, copper, cadmium, and mercury. Some labs offer comprehensive packages that test for a wider range of contaminants.
Collect your sample correctly: Most labs provide specific instructions for collecting a water sample. This usually involves using a sterile container and following a specific flushing procedure. A common mistake is not letting the water run long enough before collecting the sample. The goal is to get water that has been sitting in your pipes, as this is where lead contamination is most likely to occur.
Send the sample promptly: Time is of the essence. Deliver the sample to the lab as quickly as possible to ensure accurate results.
Interpret the results: The lab will provide a report with the levels of each heavy metal detected. Compare these levels to the EPA’s Maximum Contaminant Levels (MCLs). If any levels exceed the MCL, it’s time to take action.

Now, let’s talk filtration. Not all filters are created equal. A simple pitcher filter might remove some chlorine and improve taste, but it’s unlikely to effectively remove heavy metals. For that, you need a filter specifically designed for heavy metal removal.

Here are some filtration options suitable for Bozeman’s water, considering its potential heavy metal content:

Reverse Osmosis (RO) Systems: These are highly effective at removing a wide range of contaminants, including heavy metals. They work by forcing water through a semi-permeable membrane, leaving contaminants behind. RO systems are typically installed under the sink and provide filtered water through a separate faucet.
Activated Carbon Filters: These filters use activated carbon to adsorb contaminants. They are effective at removing chlorine, sediment, and some heavy metals, but their effectiveness varies depending on the type of carbon used and the specific heavy metal. Look for filters certified to NSF/ANSI Standard 53 for lead reduction.
Whole-House Filters: These filters are installed on the main water line and filter all the water entering your home. They are a good option if you want to protect all your appliances and fixtures from contaminants. However, they can be more expensive than point-of-use filters.

Choosing the right filter depends on your budget, water quality, and specific concerns. If your water test reveals high levels of lead, an RO system is likely the best option. If you’re primarily concerned about taste and odor, an activated carbon filter might suffice.

Finally, let’s optimize your bone broth recipe to minimize potential contaminant absorption.

Source your bones carefully: Choose bones from grass-fed, pasture-raised animals whenever possible. These animals are less likely to have been exposed to heavy metals in their feed. Local farms around Bozeman, like those participating in the Gallatin Valley Farmers’ Market, are a great place to start.
Blanch the bones: Before simmering, blanch the bones in boiling water for a few minutes and then discard the water. This helps to remove impurities and potential contaminants from the surface of the bones.
Use filtered water: Always use filtered water for making bone broth, regardless of whether you’ve tested your tap water. This adds an extra layer of protection.
Simmer for the right amount of time: While a long simmer is essential for extracting nutrients, excessive simmering can also increase the risk of heavy metals leaching into the broth. A simmer of 12-24 hours is generally sufficient.
Skim the scum: During the first few hours of simmering, a layer of scum will form on the surface of the broth. Skim this off regularly, as it contains impurities and potential contaminants.
Add an acid: Adding a small amount of acid, such as apple cider vinegar or lemon juice, can help to extract minerals from the bones. However, it can also increase the leaching of heavy metals. Use acid sparingly and only if you’re confident in the quality of your water and bones.

A common pitfall is assuming that because Bozeman is a relatively pristine area, its water is inherently safe. This is a dangerous assumption. Regular testing and appropriate filtration are essential for protecting your health. Another mistake is neglecting to maintain your filtration system. Filters need to be replaced regularly according to the manufacturer’s instructions to ensure they are working effectively.

By taking these steps, you can enjoy the comforting benefits of bone broth without worrying about potential heavy metal exposure. Stay informed, test your water, choose the right filtration, and optimize your recipe. Your health is worth it.