How Clean Is Lake of Egypt?
Lake of Egypt is nutrient-rich, with elevated phosphorus and algae. It received a water quality grade of D (Nutrient-rich) based on EPA monitoring data. Water clarity (Secchi depth): 3.2 ft. Phosphorus: 40.5 µg/L. Chlorophyll-a (algae): 22.1 µg/L. Trophic State Index: 60.
Cleanliness Snapshot
| Metric | Lake of Egypt | Illinois avg |
|---|---|---|
| Overall Grade | D | D |
| Water Clarity (Secchi) | 3.2 ft | — |
| Phosphorus | 40.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 22.1 µg/L | <10 = clean |
| Trophic State Index | 60 | <50 = clean |
How does Lake of Egypt compare?
Lake of Egypt's grade of D matches or beats the Illinois state average of D. It ranks #1 of 1 lakes in Williamson County by water quality score.
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