How Clean Is Muskego Lake?
Muskego Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Phosphorus: 59.4 µg/L. Trophic State Index: 63.
Cleanliness Snapshot
| Metric | Muskego Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Phosphorus | 59.4 µg/L | <30 = clean |
| Trophic State Index | 63 | <50 = clean |
How does Muskego Lake compare?
Muskego Lake's grade of C matches or beats the Wisconsin state average of C. It ranks #40 of 45 lakes in Waukesha County by water quality score. Multi-year monitoring data shows water quality is declining based on 2 years of records.