Is Cedar Hill Lake 1 Safe for Swimming?
Cedar Hill Lake 1 in Jefferson County, Wisconsin has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 2.6 ft visibility. Phosphorus: 54.3 µg/L. Chlorophyll-a (algae): 16.4 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 2.6 ft |
| Phosphorus | 54.3 μg/L |
| Chlorophyll-a (Algae) | 16.4 μg/L |
| Location | Jefferson County, Wisconsin |
How does Cedar Hill Lake 1 compare?
With an overall water quality grade of D, Cedar Hill Lake 1 falls below the Wisconsin state average of Grade C. It ranks #6 of 7 lakes in Jefferson County by water quality score.
Water clarity (Secchi depth) sits at 2.6 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff. Algae levels (chlorophyll-a) measure 16.4 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.