Brome-Missisquoi County, Québec · Water Quality Report Card
Lac Brome
Lac Brome in Brome-Missisquoi, Québec received a water quality grade of B (Good). Water clarity: 3.1 m visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 8 µg/L.
- Clarity
- 3.1 m
- Type
- Mesotrophic
Lac Brome is a mesotrophic lake in Brome-Missisquoi County, Québec. Water quality is graded B based on 3 sampling years through 2025. Compared to the 5 other monitored lakes in Brome-Missisquoi County, Lac Brome ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 10 ft. Phosphorus level: 14 µg/L. Chlorophyll-a: 8 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.05 m | B |
| Phosphorus | 14 µg/L | A |
| Chlorophyll-a (Algae) | 8 µg/L | B |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lac Brome
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Fishing Lac Brome
Location
County Ranking
Ranked #2 of 6 lakes in Brome-Missisquoi
Cleaner Lakes Within 30 Miles
Lac Brome holds Grade B. 4 nearby lakes hold higher grades.
- ALac GaleBrome-Missisquoi · 9.3 mi · Higher grade (B → A)
- ALac TrousersMemphrémagog · 8 mi · Higher grade (B → A)
- ALac Long PondMemphrémagog · 8.6 mi · Higher grade (B → A)
- ALac NickMemphrémagog · 9.1 mi · Higher grade (B → A)
Nearby Lakes in Brome-Missisquoi
Explore Lac Brome across LakeGrade
More Québec Lake Rankings
Other Grade B Lakes in Québec
Mesotrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac Brome 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: 2025-08-01
Monitoring stations: