Skip to main content
LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Cleanest Lakes in Pennsylvania

Main Lake in Beaver County leads the rankings with a water quality grade of NR. Below are the top 50 cleanest monitored lakes in Pennsylvania, ranked by EPA water quality score.

Ranked List

#LakeCountyGradeClarityPhosphorusAlgae
1Main LakeBeaverNR---
2Ambridge ReservoirBeaverNR---
3Bradys Run LakeBeaverNR---
4Hereford Manor LakeBeaverNR---
5Beaver Meadows LakeForestNR---
6Buzzard SwampForestNR---
7Tionesta LakeForestNR---
8Hills Creek LakeTiogaNR---
9Tauscher PondTiogaNR---
10Hamilton LakeTiogaNR---
11Lake NessmukTiogaNR---
12Beechwood LakeTiogaNR---
13Cowanesque LakeTiogaNR---
14Wildwood LakeDauphinNR---
15DeHart ReservoirDauphinNR---
16Pine Swamp PondWayneNR---
17Island LakeWayneNR---
18Beaver PondWayneNR---
19Shehawken LakeWayneNR---
20Hiawatha LakeWayneNR---
21Starlight LakeWayneNR---
22Hempstead LakeWayneNR---
23Perch PondWayneNR---
24Lower Twin LakeWayneNR---
25Upper Twin LakeWayneNR---
26Coxton LakeWayneNR---
27Hickory LakeWayneNR---
28Tamarack Swamp PondWayneNR---
29Spruce LakeWayneNR---
30Independent LakeWayneNR---
31Bone PondWayneNR---
32Little Hickory LakeWayneNR---
33Long PondWayneNR---
34Underwood LakeWayneNR---
35Lake ComoWayneNR---
36High LakeWayneNR---
37Sly LakeWayneNR---
38Kinneyville PondWayneNR---
39Nabbys LakeWayneNR---
40Lake CharlotteWayneNR---
41Open Woods PondWayneNR---
42Mud PondWayneNR---
43Lake ConstanceWayneNR---
44Valley View LakeWayneNR---
45Moc-a-Tek LakeWayneNR---
46Goose PondWayneNR---
47Lake LacawacWayneNR---
48Waynewood LakeWayneNR---
49Beyea PondWayneNR---
50Cobb PondWayneNR---

More Answers for Pennsylvania

Cleanest lakes →Safest swimming lakes →Lakes with algae →All Pennsylvania lakes →

Get Pennsylvania water-quality updates

New grades and algae readings can change this ranking. Unsubscribe anytime.