Skip to main content
LakeQuality

Cleanest Lakes in Jefferson County, Wisconsin

Rock Lake in Jefferson County leads the rankings with a water quality grade of A and 12.5 ft of clarity. Below are the top 7 cleanest monitored lakes in Jefferson County, Wisconsin, ranked by EPA water quality score.

Ranked List

#LakeCountyGradeClarityPhosphorusAlgae
1Rock LakeJeffersonA12.5 ft17.9 µg/L-
2Lake RipleyJeffersonB8.8 ft22.3 µg/L-
3Red Cedar LakeJeffersonC4.3 ft23.7 µg/L-
4Blue Spring LakeJeffersonC6 ft23.8 µg/L-
5Lower Spring LakeJeffersonC5 ft46.9 µg/L-
6Mud LakeJeffersonD2.1 ft63.1 µg/L-
7Lake KoshkonongJeffersonF1.7 ft287 µg/L-

More Answers for Jefferson County, Wisconsin