What is the cleanest lake in York Region County, Ontario?

Eaton Lake in York Region County is the cleanest lake on the readings in York Region County, Ontario with an EPA water-quality readings of — and 10.5 feet of 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; 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 York Region County, Ontario

Eaton Lake in York Region County leads the rankings on measured clarity and nutrients and 10.5 ft of clarity. Below are the top 6 cleanest monitored lakes in York Region County, Ontario, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Eaton Lake	York Region	—	10.5 ft	18.9 µg/L	-
2	Mary Lake	York Region	—	10.7 ft	17 µg/L	-
3	Preston Lake	York Region	—	13.1 ft	15 µg/L	-
4	St George Lake	York Region	—	9.7 ft	18.7 µg/L	-
5	Wilcox Lake	York Region	—	8 ft	18.8 µg/L	-
6	Musselman Lake	York Region	—	7.2 ft	20.6 µg/L	-

Ranked List

More Answers for York Region County, Ontario