Gandy Lake
Orange County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Gandy Lake. Here is what has been measured.
- Mesotrophic
Gandy Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.2 ft visibility. Phosphorus: 11 µg/L.
Gandy Lake is a mesotrophic lake in Orange County, Florida. Overall water quality is declining over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Gandy Lake ranks #168 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-03-03. Methodology: how these readings are compared.
Swimming conditions
Readings onlyBacteria tested: low
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Based on E. coli testing, Gandy Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 30 samples across 8 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Whether Gandy Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Gandy Lake
These are the measurements Florida DEP publishes for Gandy Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.2 ft. Phosphorus 11 µg/L. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 11µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 46 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Gandy Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Gandy Lake typically sits around 77°F at the surface in October. Summer average is about 86°F. Usually warmest in Jun (about 86°F) and coldest in Feb (about 64°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (64°F) to its warmest (86°F).
Typical surface water temperature by month, from 64 field readings (2010–2025) via the EPA Water Quality Portal. See the full Gandy Lake water temperature breakdown →
Stays via Stay22
Stays near Gandy Lake
Compare lakeside cabins, hotels, and vacation rentals near Gandy Lake in Orange County, Florida — 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 Gandy Lake
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Fishing Gandy Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Stable+0.05 µg/L/yr5 years
Nearby Lakes in Orange County
Frequently asked questions about Gandy Lake
Where is Gandy Lake?
- Gandy Lake is a lake in Orange County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Gandy Lake?
- Gandy Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.2 ft visibility. Phosphorus: 11 µg/L.
Is Gandy Lake safe to swim in?
- Based on E. coli testing, Gandy Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 30 samples across 8 seasons. That is a historical summary of past bacteria testing, not a current reading and not a swimming clearance. Bacteria levels can spike quickly after heavy rain, so whether Gandy Lake is safe to swim in today is a call for Florida's water agency and the county health department; check their current beach advisories before you swim.
What is the water temperature of Gandy Lake?
- Gandy Lake typically sits around 77°F at the surface in October, from 64 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
67 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples67 samples · 2020–2025
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.