The City of Orlando has been performing water quality sampling on Clear Lake on a quarterly basis since 1985. The City has published a water quality report that provides data on all of our lakes through 2019. This report can be found at: https://www.orlando.gov/Parks-the-Environment/Lakes-and-Rainfall/Find-Rainfall-Water-Quality-and-Lake-Level-Data. Please click on the link at the bottom right of the page under ‘Related Information. Another great resource for water quality is the Orange County Water Atlas. Please find the link specific for Clear Lake: https://orange.wateratlas.usf.edu/waterbodies/lakes/140020/ . I hope you find this site helpful and informative.