Have you ever wondered what is really inside the water coming out of your kitchen tap or the food sitting in your refrigerator? It is completely normal to feel a bit curious or worried when you hear scientists talking about hidden chemicals in our daily environment.
Today, we are going to talk about a chemical called perchlorate. You might not have heard its name before. But understanding what it is and how it affects your body—especially your thyroid gland—is very important for your family's health and peace of mind.
Key Takeaways About Perchlorate
- Perchlorate is a man-made chemical used in rocket fuel, fireworks, and road flares.
- It can enter our drinking water sources and certain food crops through soil runoff and industrial waste.
- High levels of perchlorate can block your thyroid gland from absorbing iodine, which slows down hormone production.
- Pregnant women, breastfeeding mothers, infants, and young children face the highest health risks.
- Boiling your water does not remove perchlorate, but specialized reverse osmosis filters can clear it effectively.
Amount of water to drink
Know the amount of water needed per day based on weight, activity and climate
What Is Perchlorate?
Simply put, perchlorate is a chemical that humans manufacture for industrial and military purposes. It has no color and no smell at all. People use it mostly to make rocket fuel, ammunition, fireworks, and road flares.
Now, you might think to yourself, how does something used in rocket fuel ever affect me? The problem happens when this chemical enters the environment. It dissolves easily in water and moves right down into our soil and groundwater supplies.
Because of this movement, trace amounts can end up in the water we drink and the food we eat. Research shows that low-level exposure is quite common today. However, high levels of exposure can disrupt your thyroid gland and affect brain development in unborn babies.
Can Perchlorate Be in Your Drinking Water?
This is a very common question for many families. While some national governments have strict safety rules, health experts and local agencies monitor water supplies closely. Water near manufacturing plants, military bases, or rocket test sites often shows higher levels of this chemical.
How to Check Your Water
You can call your local water utility provider to ask about water testing reports. Your water bill usually lists contact numbers for these inquiries. If you use a private well for your home water supply, you should contact an approved testing laboratory to test your water.
What to Do If Perchlorate Is in Your Water
Important Water Safety Fact: Boiling your water does not remove perchlorate. Heating or boiling actually concentrates the chemical as water evaporates.
There are reliable ways to protect your drinking water if contamination is found:
- Bottled water: You can temporarily switch to certified bottled water if your tap water test results show high contaminant levels.
- Water filters: Standard kitchen jug filters do not remove perchlorate. You need a specialized system called a point-of-use reverse osmosis (RO) filter. These units fit neatly under your kitchen sink and filter out dissolved chemicals.
Medical test equipment that can be used at home
Essential home medical devices including blood pressure monitors, oximeters and digital thermometers.
Check Availability →How Else Can Perchlorate Enter Your Body?
Drinking water is not the only exposure route. You can absorb perchlorate through food and your surrounding environment. The table below outlines these exposure routes in detail.
| Exposure Route | Detailed Explanation & What You Should Know |
|---|---|
| Food Sources | Scientists have found low levels of perchlorate in milk and leafy green vegetables grown in contaminated soil. However, you should still eat healthy vegetables because their nutritional benefits outweigh minimal risks. |
| Living Environment | Living near fireworks factories, military sites, or waste dumps increases exposure. If you have young children nearby, do not let them eat dirt or play in untreated soil. Always wash their hands before eating meals. |
| Other Sources | Using tobacco products, attending large fireworks displays, and exposure to certain cleaning products or swimming pool chemicals can also add minor amounts of perchlorate to your body. |
What Are the Real Health Risks of Perchlorate?
This is the most critical part of our discussion. When high levels of perchlorate enter your body, it targets a small butterfly-shaped gland located in the front of your neck called the thyroid gland.
Think of your thyroid gland as the engine of your body. It produces vital hormones that control your metabolism, body temperature, and heart rate. These thyroid hormones are also essential for healthy brain growth in babies and young children.
How Perchlorate Works
Your thyroid gland needs a mineral called iodine to make its hormones. This is why governments add iodine to table salt. Perchlorate disrupts this process by blocking your thyroid gland from taking in iodine. It acts just like someone locking a door so you cannot enter.
When you experience long-term exposure to high levels of perchlorate, your thyroid struggles to make enough hormones. This can lead to a condition called hypothyroidism, or an underactive thyroid. If left untreated, hypothyroidism can cause fatigue, weight gain, heart issues, and developmental delays.
Who Is at the Highest Risk?
Babies and young children face much higher risks than healthy adults. Their growing brains and nervous systems depend entirely on steady thyroid hormone levels during early development.
Special Warning for Pregnant and Nursing Mothers
If you are pregnant or breastfeeding, you must pay close attention to iodine and thyroid health. An unborn baby relies completely on the mother's thyroid hormones to build a healthy central nervous system. Maternal iodine deficiency combined with perchlorate exposure can permanently impact a child's learning capacity and cognitive growth.
What Should You Do If You Are Pregnant?
Please do not panic or worry unnecessarily. The best step you can take is to talk openly with your doctor during your prenatal visits. Ask if you are getting enough iodine in your daily diet.
Most people get enough iodine through iodized table salt and balanced meals. However, never start taking extra vitamin or mineral supplements on your own unless your obstetrician specifically prescribes them for you.
When to Call the Doctor & Emergency Red Flags
While perchlorate exposure usually causes long-term, subtle changes rather than sudden emergencies, you should contact your doctor right away if you notice signs of thyroid problems such as extreme tiredness, unexplained weight gain, feeling cold all the time, or severe mood changes.
Call 911 (US/Canada), 999 (UK), or go to your nearest Emergency Department right away if you experience acute medical distress, severe allergic reactions, rapid heart palpitations, or sudden breathing difficulties.
Sources & References:
- Centers for Disease Control and Prevention (CDC). Perchlorate and Health.
- U.S. Environmental Protection Agency (EPA). Drinking Water Health Advisories for Perchlorate.
- National Institutes of Health (NIH) / PubMed. Perchlorate Exposure and Thyroid Hormone Function.
- Mayo Clinic. Hypothyroidism: Symptoms, Causes, and Management.
- National Health Service (NHS UK). Thyroid Health and Iodine Guidance.
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