Lake Lawne South
Orange County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake Lawne South. Here is what has been measured.
- Eutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- Limited data
Lake Lawne South in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.1 ft visibility. Phosphorus: 76 µg/L.
Lake Lawne South is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Overall water quality is improving over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Lake Lawne South ranks #292 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-10. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
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, Lake Lawne South rarely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 3.7% of 27 samples across 6 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 Lake Lawne South 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 Lake Lawne South
These are the measurements Florida DEP publishes for Lake Lawne South, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.1 ft of visibility. Phosphorus 76 µg/L. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 76µg/L | Poor 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. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Lawne South
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Lawne South typically sits around 78°F at the surface in October. Summer average is about 84°F. Usually warmest in Jul (about 84°F) and coldest in Jan (about 61°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (61°F) to its warmest (84°F).
Typical surface water temperature by month, from 120 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Lawne South water temperature breakdown →
Stays via Stay22
Stays near Lake Lawne South
Compare lakeside cabins, hotels, and vacation rentals near Lake Lawne South 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Lake Lawne South are listed below.
Top-rated places to stay near Lake Lawne South
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Fishing Lake Lawne South
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Stable5 years
Phosphorus
Improving-6.2 µg/L/yr5 years
EPA Impairment Status
Lake Lawne South is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL3004C · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Lake Lawne South under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger.
- Orange Co & Co App - MS4Orlando · 0.7 mi away · NPDES FLS000011Major
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.
Nearby Lakes in Orange County
Frequently asked questions about Lake Lawne South
Where is Lake Lawne South?
- Lake Lawne South 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 Lake Lawne South?
- Lake Lawne South in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.1 ft visibility. Phosphorus: 76 µg/L.
Is Lake Lawne South safe to swim in?
- Based on E. coli testing, Lake Lawne South rarely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 3.7% of 27 samples across 6 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 Lake Lawne South 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 Lake Lawne South?
- Lake Lawne South typically sits around 78°F at the surface in October, from 120 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
35 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 samples35 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
Regulated discharger data from EPA ECHO (ICIS-NPDES)