The Department of Natural Resources and Lake of the Ozarks Watershed Alliance volunteers tested 53 points on the lake this week on the Osage arm from mile marker 36 to 60. These same coves were tested in May with one result coming in above the EPA standard of safety for swimming of 235 E coli colonies per 100 milliliters of water. For July the 53 tests all came back with levels well below the EPA acceptable safety standard. The highest reading came in at 56.5 colonies. The sampling program began back at the dam three years ago and has moved along the lake in the hopes of creating a five year baseline study which can be used to set a stress level for the lake. These same sites will be tested again in October with over 50 different sites in the same mile marker range scheduled to be tested in August. Ameren UE also partners with Iowa and the DNR in the baseline testing.