Hermosansh Lake
Lake County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Hermosansh Lake. Here is what has been measured.
- Mesotrophic
- Limited data
Hermosansh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.7 ft visibility. Phosphorus: 18 µg/L.
Hermosansh Lake is a mesotrophic lake in Lake County, Florida. Water clarity is declining over recent sampling years. Compared to the 127 other monitored lakes in Lake County, Hermosansh Lake ranks #99 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-08-18. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
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. Check local advisories before you swim.
Whether Hermosansh 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 Hermosansh Lake
These are the measurements Florida DEP publishes for Hermosansh 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 5.7 ft. Phosphorus 18 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 18µg/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. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Fishing Hermosansh Lake
Water quality readings over time
3 seasons of samples on record (2020–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening3 years
Phosphorus
Improving-5.72 µg/L/yr3 years
Nearby Lakes in Lake County
Frequently asked questions about Hermosansh Lake
Where is Hermosansh Lake?
- Hermosansh 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 Hermosansh Lake?
- Hermosansh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.7 ft visibility. Phosphorus: 18 µg/L.
Is Hermosansh Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Hermosansh Lake across LakeQuality
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Mesotrophic Lakes in Florida
Where this data comes from
7 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 samples7 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.