What is the cleanest lake in Washington County, Wisconsin?

Big Cedar Lake-North Site-Near West Bend in Washington County has the cleanest nutrient and algae readings in Washington County, Wisconsin, with 11.8 feet of measured water clarity.

How are these rankings calculated?

Nutrients and algae, total phosphorus, nitrogen, chlorophyll-a and turbidity, are read against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown separately. Lakes without enough recent samples are listed without a condition class rather than ranked low. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in Washington County, Wisconsin

Big Cedar Lake-North Site-Near West Bend in Washington County leads the rankings on measured clarity and nutrients and 11.8 ft of clarity. Below are the top 16 cleanest monitored lakes in Washington County, Wisconsin, ranked on EPA nutrient and algae measurements.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Big Cedar Lake-North Site-Near West Bend	Washington	11.8 ft	17.5 µg/L	3.6 µg/L
2	Green Lake	Washington	9 ft	16.6 µg/L	-
3	Little Friess Lake	Washington	7.4 ft	26.1 µg/L	-
4	Pike Lake	Washington	7 ft	19.3 µg/L	-
5	Bark Lake	Washington	5.5 ft	33 µg/L	-
6	Druid Lake	Washington	5.5 ft	23.7 µg/L	-
7	Friess Lake	Washington	4 ft	32.9 µg/L	-
8	Lake Five	Washington	12 ft	14.2 µg/L	-
9	Little Cedar Lake	Washington	10.5 ft	12.1 µg/L	-
10	Wallace Lake	Washington	-	-	-
11	Gilbert Lake	Washington	-	-	-
12	Lucas Lake	Washington	-	-	-
13	Silver Lake	Washington	-	-	-
14	Little Cedar Lake	Washington	-	-	-
15	Lake Twelve	Washington	-	-	-
16	Erler Lake	Washington	-	-	-

Ranked List

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