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Posted on: May 12, 2021

Illinois American Water Supply Transition

We continue to make progress and beginning on or about June 1, 2021, Glen Carbon is expected to transition from purchasing water from the City of Edwardsville to purchasing water from Illinois American Water.  This transition supports quality, reliable water service to our residents as well as decreases costs to the Village.  This letter includes important information regarding the work we’ve completed, water quality and water treatment.  Please read it in full.  


To change water service providers, a water quality study was required by the Illinois Environmental Protection Agency (EPA).  Working with Illinois EPA and Illinois American Water, we completed a year-long study to analyze the impact of the changes in source water and pipe materials.  This study was completed to safeguard residents and determined water to be delivered by Illinois American Water to the Village of Glen Carbon meets all state and national drinking water standards. 

 We have requested a permit from Illinois EPA to construct the connection to Illinois American Water.  This work should take less than a month to complete and will allow Illinois American Water to deliver treated water from its Granite City Water Treatment Plant to the Village of Glen Carbon.  This change will occur on or about June 1, 2021.


The transition in wholesale water providers will result in a change in disinfection processes.  The treatment will change from free chlorine disinfection by the City of Edwardsville to chloramination disinfection by Illinois American Water.  Since the early 1900s, chloramines have been used routinely in the United States and Canada. Nearly one in three U.S. surface water treatment facilities currently use chloramination in cities including Washington D.C., San Francisco, Boston, Dallas and Indianapolis.  Enclosed is an FAQ on chloramination. You can also find information at under Water Quality and Chrloramination FAQs.

 Chloramination is the practice of mixing a small amount of ammonia in the disinfection process.  This helps to reduce the taste and odor associated with free chlorine and also helps to better maintain the required residual levels throughout the distribution system.  Chloramination is a preferred method because it reduces the creation of disinfection byproducts (DBP) during the treatment process. 

 Chloraminated water can be used in all the same ways for drinking, bathing, cooking, cleaning and watering plants, lawns and gardens. Just as they should with free chlorine treated water, kidney dialysis patients should take special care when using chloraminated water.  Water comes in contact with the bloodstream in the dialysis process; therefore, just as free chlorine would be toxic, chloramines in the water would also be toxic. Kidney dialysis patients should contact their physician or local kidney dialysis center for guidance on modifications to dialysis machines and procedures. Medical centers that perform dialysis are responsible for purifying the water that enters the dialysis machines. Dialysis patients can drink chloraminated water and use it for bathing, washing wounds and all other standard uses of water. 

Fish owners and industrial users should also take care.  Industrial facilities should carefully observe their production processes to ensure there are no adverse effects.   Both chlorine and chloramines are toxic to fish in very low levels and must be removed from the water to be used in an aquarium. Most pet stores sell a disinfectant removal product that can be added to the tap water prior to introduction to the fish tank or pond.  


To make this change, we worked diligently with Illinois American Water and the Environmental Protection Agency.  The connection to Illinois American Water’s system has been tested and confirms the drinking water meets all state and federal drinking water standards. Illinois American Water monitors water quality around the clock to safeguard customers.  You can learn more about their commitment and view water quality reports at 

 Should you have any question, please feel free to contact Jamie Bowden, Village Administrator or John Leezy, Utility Superintendent at (618) 288-1200.




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