How Clean Is Trego Lake?
Trego Lake is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Phosphorus: 16.5 µg/L. Trophic State Index: 45.
Cleanliness Snapshot
| Metric | Trego Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | C |
| Phosphorus | 16.5 µg/L | <30 = clean |
| Trophic State Index | 45 | <50 = clean |
How does Trego Lake compare?
Trego Lake's grade of A matches or beats the Wisconsin state average of C. It ranks #11 of 47 lakes in Washburn County by water quality score.