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Lake Zurich, IL

Image of a man pouring tap water into a glass.

Here’s What You Need to Know About Drinking Water in Lake Zurich, IL

Known contaminants:

  • Bromodichloromethane;
  • Chloroform;
  • Dibromochloromethane;
  • Radium;
  • And total trihalomethanes

At Angel Water, we want to help you understand what is in your drinking water. As a result, you can take steps to make sure it is healthier and cleaner!

The Environmental Working Group (EWG) found in a recent study that Lake Zurich, IL, had many contaminants in its drinking water. Some of these toxins were found to be above EWG health guidelines. These toxins include bromodichloromethane, chloroform, dibromochloromethane, radium, and total trihalomethanes.

Studies have also found that significant health risks may occur if over-exposed to these toxins. However, there is a solution to healthier water.

Keep reading to find out what contaminants live in the drinking water in Lake Zurich, IL. We will also explain how Angel Water can help you keep your water healthier.

Radium-226 and -228
Total Trihalomethanes
2017 Total
2.28 PPB
2.62 PPB
1.38 PPB
2.97 PCI/L
6.65 PPB
EWG Recommendation
0.06 PPB
0.4 PPB
0.1 PPB
0.05 PCI/L
0.15 PPB


Bromodichloromethane is created when chlorine or other disinfectants are used to treat drinking water. It belongs to a group of disinfectant byproducts called total trihalomethanes (TTHMs).

Although disinfectants protect against diseases, the byproducts have hazardous health risks. This phenomenon is common with chlorine treatment, and Lake Zurich uses chlorine to treat its drinking water.

Over-exposure to bromodichloromethane increases the risk of cancer and may cause problems during pregnancy.

There is currently no legal limit to the amount of bromodichloromethane allowed in drinking water. However, the EWG states it should not exceed 0.06 ppb.

Unfortunately, a 2017 EWG report listed the level of bromodichloromethane in Lake Zurich drinking water at 2.28 ppb. That is 38x higher than the guideline.



Chloroform is another one of the TTHMs formed when chlorine and other disinfectants are used to treat drinking water. We also frequently find the compound in industrial waste runoff, which gets into the water.

Chloroform is one of the most common contaminants in drinking water. It is in the drinking water of 220 million Americans across 46 states.

The compound can increase the risk of cancer, damage the central nervous system, and cause problems with pregnancies.

There is no legal limit for the amount of chloroform allowed in drinking water. However, the EWG states in their own guidelines that it should not exceed 0.4 ppb. In 2017, the EWG found levels of chloroform in Lake Zurich water to be at 0.610 ppb. That is 6.6x higher than the EWG standard.



Dibromochloromethane is another one of the TTHMs formed from chlorine and disinfectants in the drinking water.

High levels of dibromochloromethane can cause damage to the liver and kidneys. Eating or breathing in dibromochloromethane can cause drowsiness and slow down brain activity.

Like bromochloromethane and chloroform, there is not a legal limit for this contaminant in drinking water. However, the EWG advises keeping levels under 0.1 ppb.

In 2016, the EWG found levels of dibromochloromethane in Lake Zurich drinking water to be at 2.77 ppb, or 14x higher than their standard.


Radium-226 and -228

Radium is a radioactive element that can occur naturally in groundwater.  Oil and gas activities, such as hydraulic fracturing, can also elevate levels of radium.

Radium-226 and radium-228 are the two most common forms of radium. Some cities report them together, and others report them separately. The EWG reports the levels together for Lake Zurich.

The presence of radium in drinking water increases the chances of bone and other cancers, kidney damage, and congenital defects.

The amount of radium in drinking water is measured by picocuries per liter (pCi/L). Federal law limits it to no more than 5 picocuries per liter of combined radium.

However, the EWG places a lower limit. The EWG states that radium levels should be no more than 0.05 pCi/L. As of 2017, the amount of radium-226 and radium-228 combined in Lake Zurich drinking water was 2.26 pCi/L, or 59x the limit.


Total Trihalomethanes (TTHMs)

Total trihalomethanes (TTHMs) are the class of contaminants formed by chlorine or other disinfectant byproducts. The four chemicals included are chloroform, bromodichloromethane, dibromochloromethane, and bromoform.

Studies have found that TTHMs increase the risk of bladder and skin cancer and problems during pregnancy. Those problems include spontaneous miscarriage, cardiovascular defects, neural tube defects, and low birth weight.

Total trihalomethanes are found consistently in drinking water in Illinois. Many cities have drinking water with total trihalomethanes in it.

The federal limit for TTHMs is at 80 ppb. However, the California Office of Environmental Health Hazard Assessment published a health goal of 0.8 ppb. The TTHMs levels in Lake Zurich drinking water are at 1.16 ppb, or 44x higher than the standard set.

How to Protect Yourself from Lake Zurich’s Harmful Water

The contaminants listed above are the ones that exceed the EWG’s health guidelines. However, there are more harmful substances in Lake Zurich’s drinking water. These toxins include barium, fluoride, trichloroacetic acid, and more.

How do you protect you and your family’s health?

At Angel Water, we strive to make water cleaner and healthier for you and your family!

One way to help prevent harmful toxins from getting into your water is by using one of our NSF certified water filters. The filters help trap the contaminants, making your water safer to drink!

Are You Ready for Cleaner Drinking Water in Lake Zurich, IL?

At Angel Water, we want to help you get healthier water for your home and family.

We hope you have found this guide helpful for understanding what’s in your water. If you want to know more about what’s in your water, try Water Wizard! It’s our free online water quality quiz.

If you are interested in getting a water filter to keep your water healthier, then we would be happy to help you!

You can stop by Angel Water or give us a call at 847-382-7800 to find the best filter for your situation!

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