Jefferson County Lake Quality
Alabama, 2 lakes, average grade D (Poor)
Only 2 lakes in Jefferson 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. On average, Jefferson County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
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 Purs Lake (C); the most-stressed is Bvlj Lake (F).
Quick Answers for Jefferson County
Planning a trip? Check special fishing regulations for Purs Lake — or check the official Alabama fishing regulations.
All Lakes in Jefferson County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Purs Lake | C | 3.6 ft | 26 µg/L |
| 2 | Bvlj Lake | F | 2.1 ft | 141 µg/L |
Other Counties in Alabama
See how Jefferson County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 34 states.
Where to stay near Jefferson County
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Source: EPA National Aquatic Resource Surveys, 2026.