Is Geneva Lake Safe for Swimming?
Geneva Lake in Walworth County, Wisconsin has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 20.7 ft visibility. Phosphorus: 13.4 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 20.7 ft |
| Phosphorus | 13.4 μg/L |
| Maximum Depth | 135 ft |
| Location | Walworth County, Wisconsin |
How does Geneva Lake compare?
With an overall water quality grade of A, Geneva Lake matches or beats the Wisconsin state average of Grade B. It ranks #10 of 34 lakes in Walworth County by water quality score.
Water clarity (Secchi depth) sits at 20.7 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.