Sudbury District County, Ontario · Water Quality Report Card
Edith Lake
Edith Lake in Sudbury District, Ontario received a water quality grade of A (Excellent). Water clarity: 4.6 m visibility. Phosphorus: 26.2 µg/L.
- Clarity
- 4.6 m
- Type
- Mesotrophic
Edith Lake is a mesotrophic lake in Sudbury District County, Ontario. Water quality is graded A based on 2 sampling years through 2025. Compared to the 264 other monitored lakes in Sudbury District County, Edith Lake ranks #122 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-05-24. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 15.1 ft down. Phosphorus level: 26.2 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.6 m | A |
| Phosphorus | 26.2 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Edith Lake
Location
County Ranking
Ranked #122 of 265 lakes in Sudbury District
Nearby Lakes in Sudbury District
Explore Edith Lake across LakeGrade
More Ontario Lake Rankings
Other Grade A Lakes in Ontario
Mesotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Edith Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2025-05-24
Monitoring stations: