Fountainsh Lake
Lake County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Fountainsh Lake. Here is what has been measured.
- Limited data
Fountainsh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 50.1 µg/L.
Fountainsh Lake is a lake in Lake County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-03-27. Methodology: how these readings are compared.
Swimming conditions
No readingBacteria tested: low
Based on E. coli testing, Fountainsh Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 6 samples across 2 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 Fountainsh 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 Fountainsh Lake
These are the measurements Florida DEP publishes for Fountainsh 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 3.9 ft. Phosphorus 50.1 µg/L. TSI 59.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 50.1µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| 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. | 59 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Fountainsh Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Fountainsh Lake
Compare lakeside cabins, hotels, and vacation rentals near Fountainsh Lake in Lake 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 Fountainsh Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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 whole trip? See where to stay at Florida’s top lakes →
Follow Fountainsh Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Fountainsh Lake
Water quality readings over time
2 seasons of samples on record (2022–2024). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
Phosphorus
Worsening+15.55 µg/L/yr2 years
Nearby Lakes in Lake County
Frequently asked questions about Fountainsh Lake
Where is Fountainsh Lake?
- Fountainsh Lake is a lake in Lake County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Fountainsh Lake?
- Fountainsh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 50.1 µg/L.
Is Fountainsh Lake safe to swim in?
- Based on E. coli testing, Fountainsh Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 6 samples across 2 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 Fountainsh 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.
Explore Fountainsh Lake across LakeQuality
More lakes in Florida
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
13 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples13 samples · 2024–2025
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.