Prairie Pointe Updates

Mid-May Update

After an unexpected failure in the primary iron filtration system that treats the naturally occurring iron in the well water, the County implemented a backup filtration system to minimize discoloration.

On-site repairs to the primary iron filter system are in progress and on schedule to be completed by the end of June.

The County continues to perform weekly iron level tests and results have been between 0.6 milligrams per liter to just under the 1.0 milligrams per liter standard set by the IEPA. This fluctuation is normal for well systems. 

Iron does not pose a health risk even above the 1.0 milligram per liter standard. The standard triggers a requirement for the County to establish an action plan to reduce the iron levels but does not indicate a risk to health. In this case, the County’s action plan is already in progress and the iron will be reduced by the end of June.

Is the water safe? 

Yes, the water is safe to consume. Lake County tested for the Illinois EPA Primary Standards for “contaminants considered a risk to human health” in March, April, May and June and the results were fully satisfactory.  Lake County has also started testing for iron levels, which is part of the Illinois EPA Secondary Standards for contaminates, which may cause aesthetic problems (color, smell and odor) on a weekly basis. The tests show that the drinking water is in compliance with Illinois EPA regulatory standards.

We recognize residents are concerned and may choose to drink bottled water during this time.

Shown are the two tanks and related control systems in the Lake County Public Works Iron Filter System for the Prairie Pointe water system. A recently awarded contract for $210,194.00 will replace the layers of specialized sand, gravel and interior piping of the tanks as well as modernize the electrical control systems. Work is scheduled to be completed in June 2018.

Filter Tanks

What happened? 

Some customers may be experiencing discolored (yellow) water through some of their faucets. The water is safe to drink and is in full compliance with EPA standards. Customers may find it occurs in faucets that aren’t run as much as others.

The yellow water is due to higher concentrations of iron in the water due to an unexpected failure of the system that treats the naturally occurring iron found in the well water.

What should I do?  

The discoloration is affecting some customers, and not the entire subdivision due to varying levels of iron in the distribution system.  If you experience yellow water, please run your faucet for 10 to 20 minutes until the water runs clear.  If the water does not clear after a few hours, or if there is also a significant loss of pressure, call the Public Works Department (847-377-7500).

The yellow water from this issue will not have an immediate impact on appliances. Generally, hard water (from wells) has a higher mineral content and can build up on appliances over the long-term. Customers can consider commercially available soft water solutions to reduce mineral deposits on their appliances. 

Will I get a credit for my increased water usage?

Lake County is offering a credit of up to 2,000 gallons for customers who have a significant increase in water usage due to flushing their lines. Customers should contact the Public Works Department at 847-377-7500 for more information.

Why did this happen?

The iron removal treatment system for the Brooks Farm water system was on our schedule to be replaced next year, but it unexpectedly failed sooner. 

How do I stay informed? 

If you’re interested in future updates, please provide your email and phone number so we can report incidents to you promptly. Call us at 847-377-7500 or send an email to

Where do I direct my questions/concerns? 

Please contact Lake County Public Works Operations Manager, Austin McFarlane, at 847-377-7500 or send an email to

Lake County Public Works apologizes for the inconvenience this has caused customers.