Consumer Confidence Reports

Get the 2018 Water Quality Report

Dear Resident:

As this report outlines, Chicago's tap water meets or exceeds the standards set by the U.S. Environmental Protection Agency for safe, clean drinking water.

Every year, we issue this report so that you know what is in Chicago's drinking water. This report details information on what the Illinois Environmental Protection Agency has detected in our water through testing. A complete definition of terms is included in the report so that you understand what the findings mean.

Chicago continues to deliver almost one billion gallons daily of clean drinking water to residents of Chicago and the surrounding suburbs, and we recognize concerns exist.

Before it gets to your tap, the Chicago Department of Water Management (DWM) takes a proactive approach to mitigating contaminants - including lead - in our system. DWM keeps our water clean by:

  • Performing over 600,000 analyses per year of tap water at every step in the treatment process and adjusting treatment protocols as necessary;
  • Using corrosion control in our water mains to minimize the risk of contaminants and replacing 100 miles of water mains in 2018 to increase reliability and efficiency;
  • Providing residents and businesses with complete instructions for flushing water through their plumbing whenever there is any water infrastructure work being done in the vicinity; and
  • Offering residential water testing by a certified laboratory free of charge. 

Regardless, we know we cannot rest on our laurels. Chicago is fortunate to have an unparalleled water source in Lake Michigan. We will fight hard to defend it by holding polluters accountable and supporting efforts to protect it from invasive species. An efficient water system, the protection of Lake Michigan and safe, clean drinking water for every resident is critical to Chicago's future.

As your mayor, I am committed to strengthening Chicago's water supply to ensure safety and quality for generations of Chicagoans to come.


Mayor Lori E. Lightfoot


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