Cleanest Lakes in Williamson County, Illinois
Lake of Egypt in Williamson County leads the rankings with a water quality grade of C and 3.2 ft of clarity. Below are the top 1 cleanest monitored lakes in Williamson County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Lake of Egypt | Williamson | C | 3.2 ft | 26 µg/L | - |