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LakeQuality

Cleaner Lakes Than Minnetonka Lake

1 higher-graded lake within 30 miles, ranked by grade improvement and proximity.

Minnetonka Lake carries a Grade B (Good) water quality score. Within 30 miles, 1 lake holds a higher grade. Zumbra-Sunny Lake (Carver County, Grade B, 4.1 mi away) is the closest meaningful upgrade.

1
B

Zumbra-Sunny Lake

Carver County, Minnesota · 4.1 mi from Minnetonka 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.

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