D
Lake Tomah -
Milwaukee County, Wisconsin
Water Quality Grade: D — Poor
Murky — only visible to about 4.9 feet. Phosphorus level: 140 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 m | D |
| Phosphorus | 140 µg/L | F |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #1 of 1 lakes in Milwaukee County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-01
Monitoring stations: 1