Sumter County Lake Quality
Florida, 12 lakes, average grade B (Good)
Only 12 lakes in Sumter County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Sumter-Panasoffkee Lake (B); the most-stressed is Sumter-Big Gant Lake (C).
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Quick Answers for Sumter County
Planning a trip? Check special fishing regulations for Sumter-Panasoffkee Lake — or check the official Florida fishing regulations.
All Lakes in Sumter County
12 lakes · 7 graded, 5 not rated7 graded lakes · 5 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | BSumter-Panasoffkee LakeSumter | B | 6 ft | 26 µg/L | No recent samples | No recent samples | Not recorded |
| 2 | BSumter-Deaton LakeSumter | B | 4.5 ft | 12 µg/L | No recent samples | No recent samples | Not recorded |
| 3 | BSumter-Okahumpka LakeSumter | B | 1.8 ft | 32 µg/L | No recent samples | No recent samples | Not recorded |
| 4 | BLkokahmpka LakeSumter | B | 4.3 ft | 12 µg/L | No recent samples | No recent samples | ✓ Public |
| 5 | BLake Deaton @ CenterSumter | B | 5.9 ft | 11.5 µg/L | No recent samples | No recent samples | Not recorded |
| 6 | CSumter-Big Gant LakeSumter | C | 3 ft | 56.5 µg/L | No recent samples | No recent samples | ✓ Public |
| 7 | CHddnlakeSumter | C | 4.1 ft | 49.5 µg/L | No recent samples | No recent samples | Not recorded |
| NRLake Panasoffkee South SideSumter | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRSumter-Miona LakeSumter | NR | 6 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRLake PanasoffkeeSumter | NR | 1.3 ft | 52 µg/L | No recent samples | No recent samples | Not recorded | |
| NRLkpnsfkee LakeSumter | NR | 5.6 ft | 11 µg/L | No recent samples | No recent samples | Not recorded | |
| NRLake Panasoffkee East of CenterSumter | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
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Other Counties in Florida
See how Sumter County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 49 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.