1
BSilver Lake
McHenry County, Wisconsin · 6.2 mi from Lily Lake
- +Higher overall water quality score
- ++3.7 ft water clarity
Cleaner Lakes Than Lily Lake
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Lily Lake carries a Grade B (Good) water quality score. Within 30 miles, 2 lakes hold a higher grade. Silver Lake (McHenry County, Grade B, 6.2 mi away) is the closest meaningful upgrade.
2
BRound Lake
Lake County, Wisconsin · 7 mi from Lily Lake
- +Higher overall water quality score
- ++4.1 ft water clarity
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.