Lac-Saint-Jean-Est County, Québec · Water Quality Report Card
Lac de L'Aqueduc de Saint-Bruno
Lac de L'Aqueduc de Saint-Bruno in Lac-Saint-Jean-Est, Québec received a water quality grade of A (Excellent). Water clarity: 4.6 m visibility. Phosphorus: 5.2 µg/L. Chlorophyll-a (algae): 1.6 µg/L.
- Clarity
- 4.6 m
- Type
- Oligotrophic
Lac de L'Aqueduc de Saint-Bruno is a cold, clear oligotrophic lake in Lac-Saint-Jean-Est County, Québec. Water quality is graded A based on 3 sampling years through 2025. Compared to the 15 other monitored lakes in Lac-Saint-Jean-Est County, Lac de L'Aqueduc de Saint-Bruno ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
Watch Lac de L'Aqueduc de Saint-Bruno water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
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: 5.2 µg/L. Chlorophyll-a: 1.6 µg/L. Trophic State Index: 34.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.6 m | A |
| Phosphorus | 5.2 µg/L | A |
| Chlorophyll-a (Algae) | 1.6 µg/L | A |
| Trophic State Index (TSI) | 34 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Lac de L'Aqueduc de Saint-Bruno
Compare lakeside cabins, hotels, and vacation rentals near Lac de L'Aqueduc de Saint-Bruno in Lac-Saint-Jean-Est, 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.
Top-rated places to stay near Lac de L'Aqueduc de Saint-Bruno
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Lac de L'Aqueduc de Saint-Bruno?
Get lake water-quality report cards plus the best cabin & lodging deals near Lac de L'Aqueduc de Saint-Bruno — straight to your inbox. No spam, unsubscribe anytime.
Fishing Lac de L'Aqueduc de Saint-Bruno
Location
County Ranking
Ranked #5 of 16 lakes in Lac-Saint-Jean-Est
Nearby Lakes in Lac-Saint-Jean-Est
Explore Lac de L'Aqueduc de Saint-Bruno across LakeGrade
More Québec Lake Rankings
Other Grade A Lakes in Québec
Oligotrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac de L'Aqueduc de Saint-Bruno 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: