What is the cleanest lake in Texas?

Lake Hawkins in Wood County is the highest-rated lake in Texas with an EPA water quality grade of A and 6.7 feet of water clarity.

How are these rankings calculated?

Lakes are graded A through F on nutrients and algae — total phosphorus, nitrogen, chlorophyll-a, and turbidity — against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown; it is not the letter. Lakes without enough recent samples are UNRATED, not given an F. Source data comes from the EPA Water Quality Portal.

Safest Lakes to Swim In in Texas

2 lakes in Texas qualify as safest for swimming, all hold grade A or B and report chlorophyll-a (algae) under 10 µg/L. Always check local advisories on the day you swim.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Lake Hawkins	Wood	A	6.7 ft	20 µg/L	6.9 µg/L
2	Hubbard Creek Reservoir	Stephens	B	3.1 ft	30 µg/L	9 µg/L

Ranked List

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