What is the cleanest lake in Salt Lake County, Utah?

Twin Lakes Reservoir in Salt Lake County is the highest-rated lake in Salt Lake County, Utah with an EPA water quality grade of NR.

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.

Cleanest Lakes in Salt Lake County, Utah

Twin Lakes Reservoir in Salt Lake County leads the rankings with a water quality grade of NR. Below are the top 3 cleanest monitored lakes in Salt Lake County, Utah, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Twin Lakes Reservoir	Salt Lake	NR	-	-	-
2	Bingham Creek Reservoir	Salt Lake	NR	-	-	-
3	Baileys Lake	Salt Lake	NR	-	-	-

Ranked List

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