Big Sand S Lake
Orange County, FloridaOligotrophic
Big Sand S Lake is a cold, clear oligotrophic lake in Orange County, Florida. Water quality is graded A based on 2 sampling years through 2025. Compared to the 531 other monitored lakes in Orange County, Big Sand S Lake ranks #61 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-02-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Good clarity, visible to about 11.2 ft. Phosphorus level: 6 µg/L. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11.2 ft | B |
| Phosphorus | 6 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Location
County Ranking
Ranked #61 of 532 lakes in Orange County
Nearby Lakes in Orange County
More Florida Lake Rankings
Other Grade A Lakes in Florida
Highlands County · Clarity: 16 ft
Walton County · Clarity: 9 ft
Highlands County · Clarity: 13.2 ft
Seminole County · Clarity: 11 ft
Seminole County · Clarity: 13 ft
Volusia County · Clarity: 14 ft
Oligotrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Big Sand S Lake under Clean Water Act (NPDES) discharge permits.
- Sea World - AquaticaOrlando · 1.8 mi away · NPDES FL0622591
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-02-27
Monitoring stations: 1
Where to stay near Big Sand S Lake
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