Johns E Lake
Orange County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Johns E Lake. Here is what has been measured.
- Eutrophic
- Impaired · Impaired biota (cause unknown)
Johns E Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 18.5 µg/L.
Johns E Lake is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Overall water quality is declining over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Johns E Lake ranks #127 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-13. 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, Johns E Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 28 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 Johns E 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 Johns E Lake
These are the measurements Florida DEP publishes for Johns E 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 18.5 µg/L. TSI 52.
| 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 | 18.5µg/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. | 52 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Johns E Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Johns E Lake typically sits around 81°F at the surface in October. Summer average is about 86°F. Usually warmest in Aug (about 87°F) and coldest in Dec (about 63°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (63°F) to its warmest (87°F).
Typical surface water temperature by month, from 54 field readings (2010–2025) via the EPA Water Quality Portal. See the full Johns E Lake water temperature breakdown →
Stays via Stay22
Stays near Johns E Lake
Compare lakeside cabins, hotels, and vacation rentals near Johns E 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.
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Fishing Johns E Lake
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Stable-0.16 µg/L/yr6 years
EPA Impairment Status
Johns E Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2873C · Official waterbody report
Nearby Lakes in Orange County
Frequently asked questions about Johns E Lake
Where is Johns E Lake?
- Johns E 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 Johns E Lake?
- Johns E Lake in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 18.5 µg/L.
Is Johns E Lake safe to swim in?
- Based on E. coli testing, Johns E Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 28 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 Johns E 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 Johns E Lake?
- Johns E Lake typically sits around 81°F at the surface in October, from 54 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
60 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 samples60 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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database