Polk-Fauna Lake
Polk County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Polk-Fauna Lake. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
Polk-Fauna Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 142 µg/L.
Polk-Fauna Lake is a productive, nutrient-rich eutrophic lake in Polk County, Florida. Overall water quality is declining over recent sampling years. Compared to the 176 other monitored lakes in Polk County, Polk-Fauna Lake ranks #126 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-09-13. 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.
Nutrient and algae readings are not a swimming clearance. Polk-Fauna Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Whether Polk-Fauna 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 Polk-Fauna Lake
These are the measurements Florida DEP publishes for Polk-Fauna Lake, 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 3 ft of visibility. Phosphorus 142 µg/L. TSI 68.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 142µg/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. | 68 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Polk-Fauna Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Polk-Fauna Lake
Compare lakeside cabins, hotels, and vacation rentals near Polk-Fauna Lake in Polk 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 Polk-Fauna Lake are listed below.
Top-rated places to stay near Polk-Fauna 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 Polk-Fauna Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Polk-Fauna Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Worsening+14.65 µg/L/yr5 years
EPA Impairment Status
Polk-Fauna 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, Recreation.
Source: EPA ATTAINS assessment unit FL1623X · Official waterbody report
Regulated Pollution Sources Nearby
7 EPA-permitted facilities operate within about 5 miles of Polk-Fauna Lake under Clean Water Act (NPDES) discharge permits, including 7 classified by the EPA as major dischargers.
- Fdot District 1 - SarasotaBartow · 2 mi away · NPDES FLS266167Major
- Fdot District 1 - LeeBartow · 2 mi away · NPDES FLS266965Major
- Polk Co & Co App - MS4Bartow · 2.2 mi away · NPDES FLS000015Major
- Fdot District 1 - PolkBartow · 2.2 mi away · NPDES FLS266779Major
- Fdot District 1 - ManateeBartow · 2.2 mi away · NPDES FLS267368Major
- U S Agri-Chemicals Corporation - Bartow Chemical PlantBartow · 2.3 mi away · NPDES FL0001961Major
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 Polk County
Frequently asked questions about Polk-Fauna Lake
Where is Polk-Fauna Lake?
- Polk-Fauna Lake is a lake in Polk County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Polk-Fauna Lake?
- Polk-Fauna Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 142 µg/L.
Is Polk-Fauna Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Polk-Fauna Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Explore Polk-Fauna Lake across LakeQuality
More lakes in Florida
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
153 measurements from 3 monitoring stations, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX153 samples · 2020–2022
Monitoring station identifiers (3)
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)