The province has lifted a public health advisory about high levels of bacteria in Last Mountain, Echo, Pasqua, Katepwa, Crooked and Round Lakes.
Tests on water samples taken Monday confirm that levels of E. coli at all public beaches tested have dropped to a level considered safe for swimming and water activities.
Officials says the receding flood and the recent warm weather helped to break down bacteria in the water.
But people are still being urged to be careful because the flooding has left a lot of debris in many lakes and rivers that could be a physical hazard.
About 100 Saskatchewan communities were under states of emergency after torrential rain caused widespread flooding at the end of June.