1
CDevils Lake
Ramsey County, Wisconsin · 10.5 mi from Sweetwater Lake
- +Higher grade (D → C)
- ++2.3 ft water clarity
Cleaner Lakes Than Sweetwater Lake
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Sweetwater Lake carries a Grade D (Poor) water quality score. Within 30 miles, 3 lakes hold a higher grade. Devils Lake (Ramsey County, Grade C, 10.5 mi away) is the closest meaningful upgrade.
3
DPelican Lake
Ramsey County, Wisconsin · 14.2 mi from Sweetwater Lake
- +Higher overall water quality score
How this list is built
Every lake on LakeQuality has a calculated grade from EPA Water Quality Portal samples — secchi depth, total phosphorus, and chlorophyll-a measured against Metropolitan Council thresholds. To suggest cleaner alternatives, we filter lakes within 30 miles to those with a strictly higher numeric score, then rank by grade improvement with a small proximity tiebreak. Cross-state and limited-data lakes are excluded so the list stays locally relevant.