Cleanest Lakes in Johnson County, Illinois
Vienna City Lake in Johnson County leads the rankings with a water quality grade of NR. Below are the top 3 cleanest monitored lakes in Johnson County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Vienna City Lake | Johnson | NR | - | - | - |
| 2 | Tall Tree Lake | Johnson | NR | - | - | - |
| 3 | Lake of Egypt | Johnson | NR | - | - | - |
More Answers for Johnson County, Illinois
Get Johnson County, Illinois water-quality updates
New grades and algae readings can change this ranking. Unsubscribe anytime.