What do Brita filters not remove?

Answered by Robert Golston

When it comes to filtration, Brita filters are a popular choice for many households. While they are effective in improving the taste and appearance of tap water, it's important to understand that they have limitations in terms of the contaminants they can remove.

One of the key things that Brita filters do not remove is pesticides. Pesticides are chemicals used in agricultural practices to protect crops from pests, but they can end up in our water sources through runoff and contamination. Unfortunately, Brita filters are not designed to remove these chemicals from water.

Another class of contaminants that Brita filters do not remove are trace pharmaceuticals. Many medications and drugs find their way into our water systems through various means such as improper disposal or excretion. While these trace amounts are generally considered safe, Brita filters are not capable of removing them completely.

Fluoride is another substance that Brita filters do not remove. Fluoride is commonly added to municipal water supplies to promote dental health. However, some people prefer to have the option of filtering out fluoride from their water, and in such cases, Brita filters may not be sufficient.

Bacteria and viruses are also not effectively removed by Brita filters. While these filters may reduce some microbial contaminants, they are not designed to eliminate all types of bacteria and viruses that can be present in water sources. It's important to note that if you suspect your water may be contaminated with harmful bacteria or viruses, it is recommended to use additional water treatment methods or consult with your local water authority.

Lastly, heavy metals such as lead and zinc, as well as asbestos, are only partially reduced by Brita filters. While they may reduce the levels of these substances to some extent, they may not completely eliminate them. If you have concerns about heavy metal or asbestos contamination in your water, it is advisable to contact your local water authority for further guidance.

Brita filters are effective at reducing certain impurities such as sediment, dirt, rust, and improving taste and appearance of water. However, they have limitations in removing contaminants like pesticides, trace pharmaceuticals, fluoride, bacteria, viruses, and heavy metals. It's important to consider the specific needs and concerns of your water source when choosing a filtration method to ensure the best possible water quality for you and your family.