The City of Carbondale is committed to protecting and maintaining the water quality of Cedar Lake. An important part of water quality is conducting routine tests so that baseline levels can be established which will allow the City to recognize potential water quality issues as they develop. In the past, the City conducted a slate of monthly water tests on the lake and published the data below for those who were interested. Since there has been no change in lake water quality in more than six years, we are discontinuing the expanded monthly testing. Lake testing at the intake structure will continue on a daily basis, as we have always done in compliance with IEPA testing requirements. In the event of any water quality issues, additional testing will be reinstated on an as-needed basis. Should you have any questions or concerns about this data please contact Lake Management.