2025 Loudoun Streams Report Card Released

Loudoun’s streams earned a C+. Here’s how you can help improve that grade.

After analyzing over a year of monitoring data collected by 150+ dedicated community scientists contributing over 2,700 volunteer hours, the results are in: our county’s streams face serious challenges. Our newly released 2025 Loudoun Streams Report Card reveals that while water clarity scored an impressive A (92%), conductivity earned a failing F grade (15%) and road salt pollution scored a concerning C (46%). These low marks signal that runoff from development and winter road treatments is stressing our local waterways.

But there’s powerful reason for hope: every one of these challenges has a community-driven solution. The Report Card doesn’t just identify problems—it shows us exactly where to focus our efforts and invites you to be part of the answer. Learn more about Loudoun Wildlife’s Stream Monitoring Program.