How Clean Is Spring Lake?
Spring Lake is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Phosphorus: 12.2 µg/L. Trophic State Index: 40.
Cleanliness Snapshot
| Metric | Spring Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | C |
| Phosphorus | 12.2 µg/L | <30 = clean |
| Trophic State Index | 40 | <50 = clean |
How does Spring Lake compare?
Spring Lake's grade of A matches or beats the Wisconsin state average of C. It ranks #1 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.