Is Lac Blanc safe to swim in?

Good for swimming, clear water with low algae levels. Lac Blanc has an overall water quality grade of B. Algae concentration (chlorophyll-a) is 3.5 µg/L. Always check local health department advisories before swimming.

Antoine-Labelle County, Québec · 46.48°N · Water Quality Report Card

Lac Blanc

Grade B — Good

Mesotrophic

Lac Blanc in Antoine-Labelle, Québec received a water quality grade of B (Good). Water clarity: 2 m visibility. Phosphorus: 9.1 µg/L. Chlorophyll-a (algae): 3.5 µg/L.

Clarity: 2 m
Type: Mesotrophic

Where to stay →Safe to swim?

Lac Blanc is a mesotrophic lake in Antoine-Labelle County, Québec. Water quality is graded B based on 3 sampling years through 2025. Compared to the 68 other monitored lakes in Antoine-Labelle County, Lac Blanc ranks #66 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

Murky, only visible to about 6.4 ft. Phosphorus level: 9.1 µg/L. Chlorophyll-a: 3.5 µg/L. Trophic State Index: 43.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.95 m	D
Phosphorus	9.1 µg/L	A
Chlorophyll-a (Algae)	3.5 µg/L	A
Trophic State Index (TSI)	43	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Lac Blanc

Compare lakeside cabins, hotels, and vacation rentals near Lac Blanc in Antoine-Labelle, Québec — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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